Santé Publique Test

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Santé Publique Test

1 / 60

Definition of midrange. The midrange is the:

a. Middle value of a set of data that has been put into rank order.

b. End of observations

c. Half-way point or the midpoint of a set of observations.

d. Beginning of observations

e. Value that occurs most often in a set of data

2 / 60

នៅកម្ពុជា អត្រាមរណៈភាពរបស់មាតាមាន ៦០ ភាគ ១០០០ កើតរស់។ មានន័យថា:

a. ផ្សេងពីនេះ

b. ក្នុងចំណោមស្ដ្រី ១០០០ នាក់ មានទារក ៦០ នាក់ស្លាប់ក្នុង ១ ឆ្នាំ ដោយសារមានបញ្ហាឆ្លងទន្លេ

c. ក្នុងចំណោមទារកកើតរស់ ១០០០ មានស្ដ្រី ៦០ នាក់ស្លាប់ក្នុង ១ ឆ្នាំ ក្នុងពេលមានគ៌កនិង ជុំវិញការឆ្លងទន្លេ

d. ក្នុងចំណោមទារកកើតរស់ ១០០០ មានស្ដ្រី ៦០ នាក់ស្លាប់ក្នុង ១ ឆ្នាំ ដោយសារមានបញ្ហាឆ្លងទន្លេ

e. ក្នុងចំណោមស្ដ្រី ១០០០ នាក់ មានទារក ៦០ នាក់កើតរស់ ១ ឆ្នាំ

3 / 60

A high prevalence may be due to:

a. A short duration of disease due to either improved treatment methods

b. High incidence, a protracted duration or both.

c. An effective prevention program

d. A decrease in incidence

e. Enhanced resistance to the disease

4 / 60

Post- Neonatal mortality rate is used to measure the:

a. Average risk of death in the population at large.

b. Risk of dying during infancy after the first-4 weeks of life.

c. Risk of dying within 28 days of birth.

d. Risk of death among person in a specific age and sex group.

e. Risk of fetal death occurring after 28 completed weeks of gestation.

5 / 60

តើអត្រាអ្វី ដែលគេគណនា ចំនួននៃទារកស្លាប់ អាយុក្រោម ៧ ថ្ងៃ?

a. Taux de mortalité Post Néonatal / Post Néonatal mortality Rate

b. Taux de mortalité Périnatal / Périnatal Mortality Rate

c. Taux de mortalité infantile / Infant Mortality Rate

d. Taux de mortalité Néonatale/ / Néonatal Mortality Rate

e. Taux de mortalité Maternelle, Maternal Mortality Rate

6 / 60

Infant mortality rate is used to measure the:

a. Risk of fetal death occurring after 28 completed weeks of gestation.

b. Risk of dying during infancy after the first-4 weeks of life.

c. Risk of dying during infancy (e.g. the first year of life).

d. Risk of dying within 28 days of birth.

e. Risk of death among person in a specific age and sex group

7 / 60

To measure the risk of women dying from maternal causes, by calculation of:

a. Infant mortality rate.

b. Causes- specific death rate (CSDR)

c. Post- neonatal mortality rate.

d. Maternal mortality rate (MMR)

e. Case fatality rate (CFR)

8 / 60

Qualitative variables are measured at the:

a. Rate level

b. Nominal level

c. Ratio level

d. Numerical level

e. Proportional level

9 / 60

There is the distance in kilometer from the house of patients to Health center: 4, 7, 3, 5, 3 and 8. If we confuse 8 to 80, what is the happened show that?

a. Increasing mean.

b. Increasing median and mean

c. Increasing the mode.

d. Increasing median mode and mean

e. Increasing the median

10 / 60

Prevalence of disease refers to the number that develop in a population at risk for the disease over a specified period time of:

a. Old cases

b. New + Old cases

c. Death cases

d. Number of live birth

e. New cases.

11 / 60

The estimated mid interval population is determined by:

a. The population at the end of the time interval.

b. The population at the beginning of the time interval + live birth.

c. The population at the beginning of the time interval + live birth – number of death cases.

d. Adding the population at the beginning of the time interval to the population at the end of the time and dividing by 2.

e. The population at the beginning of the time interval.

12 / 60

អត្រាមរណៈភាពនៃទារក (Perinatal mortality Rate, Taux de mortalité Périnatale) គឺជាការគណនាអត្រាមរណៈភាព សំដៅទៅលើទារកដែលមានអាយុ:

a. ចាប់ពី៧ថ្ងៃ ដល់ ១ ឆ្នាំ

b. ក្រោម ៧ ថ្ងៃ

c. ក្រោម ៥ ឆ្នាំ

d. ក្រោម ១ ឆ្នាំ

13 / 60

All of them are the true answers only one is the false answer. Find the false answer: Defining disease occurrences: the method used to define cases affects the accuracy of frequency measures is:

a. Identifying cases by reviewing health records

b. Identifying cases by reviewing health records from public and private sector.

c. Identifying cases by clinical evaluation

d. Counting recurrences

e. Identifying cases from personal interviews

14 / 60

In epidemiological practice, incidence rate are:

a. The most commonly used way of measuring the extent or frequency with which infectious disease is experienced by population groups

b. Also a measure of the burden of a particular disease to the health care system.

c. The less commonly used way of measuring the extent or frequency with which infectious disease is experienced by population groups.

d. Not provided information on the effectiveness of disease prevention or control programmes.

e. Useful in estimating the need for facilities and personnel.

15 / 60

Properties and uses of the median. The median is / has:

a. A good descriptive measure, particularly for data that are skewed, because it is the central point of the distribution.

b. Excellent statistical properties and is commonly used in additional statistical manipulations and analyses.

c. A good descriptive measure, particularly for data analysis.

d. The difficult measure of central location to understand and explain.

e. The easiest measure of central location to understand and explain

16 / 60

អត្រាប្រេវ៉ាឡង់ ( Prevalent Rate/Taux de Prévalent) ត្រូវបានគណនាដូចតទៅ:

a. ចំនួនប្រ/ជដែលមានជំងឺកើតថ្មី+ជំងឺចាស់ ក្នុងកំឡុងពេលជាក់លាក់មួយ X (10n) ចែកនឹងប្រជាជនមធ្យមក្នុងកំឡុងពេលដូចគ្នា

b. ចំនួនប្រ/ជដែលមានជំងឺកើតថ្មី+ជំងឺចាស់ ក្នុងកំឡុងពេលជាក់លាក់មួយ X 1000 ចែកនឹងប្រជាជនចុងឆ្នាំក្នុងកំឡុងពេលដូចគ្នា

c. ចំនួនប្រ/ជដែលមានជំងឺកើតថ្មីក្នុងកំឡុងពេលជាក់លាក់មួយ X 1000 ចែកនឹងប្រជាជនមធ្យមក្នុងកំឡុងពេលដូចគ្នា

d. ចំនួនប្រ/ជដែលមានជំងឺកើតថ្មី+ជំងឺចាស់ ក្នុងកំឡុងពេលជាក់លាក់មួយ X 1000 ចែកនឹងប្រជាជនដើមឆ្នាំក្នុងកំឡុងពេលដូចគ្នា

17 / 60

ប្រេវ៉ាឡង់ ត្រូវបានគណនាដូចតទៅ:

a. ចំនួនករណីជំងឺកើតថ្មី+ ជំងឺចាស់ X ១០០០ ចែកនឹង ប្រជាជនមធ្យម

b. ជាចំនួនករណីជំងឺ នៅចំណុចជាក់លាក់មួយ ក្នុងប្រជាជនកំណត់មួយ

c. ចំនួនករណីជំងឺកើតថ្មី X ១០០០ ចែកនឹង ប្រជាជនមធ្យម

d. ករណីជំងឺកើតថ្មី + និងជំងឺចាង់ក្នុងកំឡុងពេលមួយ នៅលើប្រជាជនជាក់លាក់មួយ

e. ចំនួនករណីជំងឺកើតថ្មី ដែលកើតមានក្នុងកំឡុងពេលមួយ នៅលើប្រជាជនជាក់លាក់មួយ

18 / 60

Neonatal mortality rate is used to measure the:

a. Risk of death among person in a specific age and sex group.

b. Risk of fetal death occurring after 28 completed weeks of gestation.

c. Risk of dying during infancy after the first-4 weeks of life.

d. Average risk of death in the population at large.

e. Risk of dying within 28 days of birth.

19 / 60

ក្នុងចំណោមទារក ១០០០ កើតរងស់ មានទារកស្លាប់ ៦០ នាក់ អាយុក្រោម ២៨ ថ្ងៃ សុច្ចនាករនេះបញ្ជាក់ ការគណនា៖

a. ផ្សេងពីនេះ

b. Taux de mortalité Périnatal , Perinatal Mortality Rate

c. Taux de mortalité infantile, Infant Mortality Rate

d. Taux de mortalité Maternelle, Maternal Mortality Rate

e. Taux de mortalité Néonatale , Neonatal Mortality Rate

20 / 60

ចំណុចដែលគួរឲ្យចងចាំក្នុងក្រាហ្វិកនោះគឺ:

a. ក្រាហ្វិកនីមួយៗ ត្រូវមានព័ត៌មានគ្រប់គ្រាន់ ដើម្បីឲ្យអាចយល់បានដោយខ្លួនឯង

b. ខ្សែគំនូសក្រាហ្វិក ត្រូវឲ្យដេតជាងខ្សែបន្ទាត់អក្ស័ កូអរដោនេ

c. ក្រិតមាត្រដ្ឋាន ក្នុងអក្ស័ទាំងពីរត្រូវតែដូចគ្នា

d. បើគេចង់បង្ហាញ Variable ចាប់ពីពីរឡើងទៅក្នុងក្រាហ្វិកមួយ, Variable នីមួយៗត្រូវតែគូសវាសយ៉ាងណាឲ្យឃើញដូចគ្នា

21 / 60

The use of a diagnostic test with a high false positive rate (poor specificity) will:

a. Underestimate incidence and prevalence.

b. Underestimate only prevalence

c. Overestimate incidence

d. Overestimate incidence and prevalence

e. Overestimate prevalence

22 / 60

អាំងស៊ីដង់កើនឡើងក្នុងករណី:

a. រយៈពេលវែងនៃការរាប់ចំនួនអ្នកជំងឺ

b. ជំងឺកើតថ្មីភៀសខ្លួនចូល

c. ករណីជំងឺកើតថ្មីកើនឡើង

d. ត្រឹមត្រូវទាំងអស់

23 / 60

នៅក្នុងខេត្តប៉ៃលិនមានប្រជាជន ៦០០០០ នាក់ នៅដើមឆ្នាំ ២០១៤។ ទារកកើតរស់ក្នុងឆ្នាំនោះមាន ៤%។ មានស្ដ្រី ៥០ នាក់ស្លាប់ទាក់ទងនឹងមានផ្ទៃពោះ និងជុំវិញការឆ្លងទន្លេស្មើនឹងអត្រា:

a. ២០/១០០០ កើតរស់

b. ២០,៨០/១០០០ កើតរស់

c. ១០,៨៣/១០០០ កើតរស់

d. ផ្សេងពីនេះ

e. ២០,៨៣/១០០០ កើតរស់

24 / 60

Definition of ordinal scale, an ordinal scale assigns:

a. A measurement begins at a true zero point and the scale has equal intervals.

b. To uses names, numbers or other symbols to assign each measurement to one of a limit number of categories that cannot be ordered one above the other.

c. Each measurement to one of unlimited number of categories that are equally spaced

d. Each measurement to one of an unlimited number of categories that are ranked in terms of a graded order.

e. Each measurement to one of a limited number of categories that are ranked in terms of a graded order

25 / 60

To measure the risk of fetal death occurring after 28 completed weeks of gestation: by calculation of:

a. Stillbirth rate (Late fetal death rate).

b. Neonatal mortality rate

c. Perinatal mortality rate

d. Crude death rate (CDR)

e. Age- and sex specific death rate.

26 / 60

ចំនួនប្រជាជនមធ្យមគឺជា:

a. ចំនួនប្រជាជនដើមឆ្នាំ

b. ចំនួនប្រជាជននៅចំកណ្ដាលនៃរយៈពេល

c. ចំនួនប្រជាជនជាក់លាក់មួយ

d. ផ្សេងពីនេះ

e. ចំនួនប្រជាជនចុងឆ្នាំ

27 / 60

នៅកម្ពុជា Taux de mortalité néonatale, Neonatal Mortality Rateមាន ៣០ ភាគ ១០០០កើតរស់ក្នុងឆ្នាំ ២០០០។ មានន័យថាក្នុងកំឡុងឆ្នាំ ២០០០

a. ក្នុងចំណោមទារក ១០០០ កើតរស់មានទារកស្លាប់ ៣០ នាក់ អាយុក្រោម ២៨ ថ្ងៃ

b. ក្នុងចំណោមទារក ១០០០ កើតរស់មានទារកស្លាប់ ៣០ នាក់អាយុក្រោម ១ ឆ្នាំ

c. ផ្សេងពីនេះ

d. ក្នុងចំណោមទារក ១០០០ កើតរស់មានទារកស្លាប់ ៣០ នាក់

e. ក្នុងចំណោមទារក ១០០០ កើតរស់មានទារកស្លាប់ ៣០ នាក់ទាក់ទងការមានផ្ទៃពោះ និង ឆ្លងទន្លេ

28 / 60

The inclusion of only “classic” cases of the disease, as defined by strict diagnostic criteria, will:

a. Overestimate incidence and prevalence.

b. Underestimate only prevalence

c. Overestimate prevalence

d. Underestimate incidence and prevalence.

e. Overestimate incidence

29 / 60

The primary reason for selecting a sample from a population is:

a. To provide evidence of the study result

b. To save money

c. To save time

d. To draw inferences about that population

30 / 60

You asked five of your classmates about their height. On the basis of this information, you stated that the average height of all students in your university or college is 1.67 meters. This is an example of:

a. Descriptive statistics

b. Parameter

c. Population

d. Inferential Statistics

31 / 60

The width of a confidence interval is influenced by:

a. The population parameter.

b. The distance between the sample mean and the population mean

c. The desired level of confidence

d. The sample size determination

32 / 60

Statistic is a numerical quantity, which is calculated from:

a. Observation

b. Population

c. Data

d. Sample

33 / 60

On the statements below which are validstatements of probability:

a. My probability of winning the lottery is less than 0.

b. Our probability of dying is 100%

c. We are 150% certain of success.

d. We are 101% certain of success.

34 / 60

Which statement is not true about confidence intervals?

a. An approximate formula for a 95% confidence interval is sample estimate ±margin of error.

b. .A 99% confidence interval procedure has a higher probability of producing intervals that will include the population parameter than a 95% confidence interval procedure.

c. .A confidence interval between 20% and 40% means that the population proportion lies between 20% and 40%.

d. .A confidence interval is an interval of values computed from sample data that is likely to include the true population value.

35 / 60

All statements below are correct to describe the negative predictive value of a screening test except one:

a. The proportion of patients who test positive who actually have the disease.

b. Likelihood of not having the disease when test is negative.

c. The proportion of negative test results that are true negative

d. The proportion of patients who test negative who are actually free of the disease

36 / 60

A screening test result for cervical cancer show that NPV= 99%. It means that:

a. Among those who had a negative screening new test, the probability of being cervical cancer-free was more than 99%

b. Among those who had a negative screening new test, the probability of being cervical cancer-free was 1%

c. Among those who had a negative screening new test, the probability of being cervical cancer-free was 99%

d. Among those who had a negative screening new test, the probability of being cervical cancer-free was less than 99%

37 / 60

If a specificity of a screening test was 89%, it means that:

a. The probability of the screening test incorrectly identifying non-diseased subjects was 21%.

b. The probability of the screening test correctly identifying non-diseased subjects was 21%.

c. The probability of the screening test correctly identifying non-diseased subjects was 89%.

d. The probability of the screening test incorrectly identifying non-diseased subjects was 89%.

38 / 60

What is the correct answer about a point estimate statement:

a. .A point estimate is a true value of the study population parameter.

b. .A point estimate is the statistic, computed from population information

c. .A point estimate is the statistic, computed from sample information,

d. .A point estimate is used to estimate the sample size

39 / 60

What is the statement of specificity of a diagnostic test:

a. The proportion of patients who test negative who are actually free of the disease

b. The ability of the test to identify correctly those who have the disease from all individuals with the disease

c. The ability of the test to identify correctly those who do not have the disease from all individuals free from the disease

d. The proportion of patients who test positive who actually have the disease.

40 / 60

What is the wrong interpretation of 95% confidence interval:

a. We can be 95% confident that the true value of population (parameter) lies within this interval.

b. The interpretation of confidence interval is always relates to a parameter and never a statistic.

c. We are 95% confident that the true value of population (parameter) is between this interval.

d. The interpretation of confidence interval is always relates to a statistic and never a parameter

41 / 60

The standard error of the mean of a sample is:

a. Based on a non-normal distribution

b. Used to determine confidence level of significant test

c. An estimate of the standard deviation of the sample

d. Not increased as the sample size increases

42 / 60

What is the statement of positive predictive value of a diagnostic test:

a. The proportion of patients who test positive who actually have the disease.

b. The proportion of patients who test negative who are actually free of the disease

c. The ability of the test to identify correctly those who have the disease from all individuals with the disease

d. The ability of the test to identify correctly those who do not have the disease from all individuals free from the disease

43 / 60

A group of 100 people are asked to state their favourite colour. 60 say blue. This experiment says that the probability of someone choosing blue is:

a. 60%

b. 30%

c. 50%

d. 40%

44 / 60

If we want higher chance of error we could calculate (chose the correct answer):

a. .A 90% confidence interval

b. .A 95% confidence interval

c. .A 98% confidence interval

d. .A 99% confidence interval

45 / 60

A normal distribution curve is determined by the (chose the correct answer):

a. Mean and sample size

b. Mean and standard deviation

c. Range and sample size

d. Range and standard deviation

46 / 60

On the statements below which are valid statements of probability:

a. .A women’s probability suffering from breast cancer in her life-time is 12 in 3

b. .A women’s probability suffering from breast cancer in her life-time is 12 in 2

c. .A women’s probability suffering from breast cancer in her life-time is 1 in 12

d. .A women’s probability suffering from breast cancer in her life-time is 12 in 1

47 / 60

The negative predictive value of a test decreases:

a. Prevalence of the disease in the population increases

b. The number of population stable

c. The prevalence of disease decreases

d. The incidence of disease increase

48 / 60

Which branch of statistics deals with the techniques that are used to organize, and summarize and simplify data:

a. Probability Statistics

b. Advanced Statistics

c. Descriptive Statistics

d. Inferential Statistics

49 / 60

Which of the following statements is true about the standard error of a proportion?

a. It is a measure of the sampling variation of the observed proportion p about the true 3 (population) proportion (

b. It is approximately equal to the standard deviation when the sample size is large

c. It is always greater than the standard deviation

d. It always lies close to 0

50 / 60

If the variance of a data set is correctly computed with the formula using n – 1 in the denominator, which of the following is true?

a. The data set could be either a sample or a population

b. The data set is a sample

c. The data set is from a census

d. The data set is a population

51 / 60

What is the correct interpretation of 95% confidence interval below:

a. In repeated sampling, 95% of the 95% CIs calculated in this manner would capture the true value of population.

b. In repeated sampling, 95% of the 95% CIs calculated in this manner would not be capture the true value of sample

c. In repeated sampling, 95% of the 95% CIs calculated in this manner would capture the value of sample

d. In repeated sampling, 95% of the 95% CIs calculated in this manner would not be capture the true value of population

52 / 60

Below is the common screening test except one:

a. Pap smear for cervical dysplasia or cervical cancer

b. Rapid diagnostic test

c. Fasting blood cholesterol for heart disease

d. Fasting blood sugar for diabetes

53 / 60

Reliability of a test means that:

a. The results of a test or measure are incorrect each time it is conducted

b. The results of a test or measure are changed each time it is conducted

c. The results of a test or measure are identical or closely similar each time it is conducted

d. The results of a test or measure are not identical or closely similar each time it is conducted

54 / 60

A positive predictive value depend on:

a. The incidence of the disease in the population tested

b. The mortality of the disease in the population tested

c. The sensitivity of the disease in the population tested

d. The negative predictive value of the disease in the population tested

55 / 60

ការសិក្សាទៅលើសំណាកនៃនិស្សិតឆ្នាំទី ២Aចំនួន ១១ នាក់បានរកឃើញថានិស្សិតបានចំណាយពេលសិក្សារយៈពេល ១០០នាទីក្នុង១ថ្ងៃហើយមាន standard deviation 20 នាទី។ គេចង់ធ្វើ hypothesis testing ថានិស្សិតឆ្នាំទី ២ បានចំណាយពេលរៀនរយៈពេល ២ម៉ោង ។ តើគេត្រូវសរសេរ Hypothesis យ៉ាងដូចម្តេច?

a. . H0: និស្សិតឆ្នាំទី២A បានចំណាយពេលសិក្សានៅផ្ទះ ច្រើនជាង ២ ម៉ោង; Ha: និស្សិតថ្នាក់ទី ២A បានចំណាយពេលសិក្សានៅផ្ទះ តិចជាង ២ ម៉ោង

b. . H0: និស្សិតឆ្នាំទី២A បានចំណាយពេលសិក្សានៅផ្ទះ = ២ ម៉ោង; Ha: និស្សិតថ្នាក់ទី ២A បានចំណាយពេលសិក្សានៅផ្ទះ ≠ ២ ម៉ោង

c. . H0: និស្សិតឆ្នាំទី២A បានចំណាយពេលសិក្សានៅផ្ទះ ≠ ២ ម៉ោង; Ha: និស្សិតថ្នាក់ទី ២A បានចំណាយពេលសិក្សានៅផ្ទះ = ២ ម៉ោង

d. . H0: និស្សិតឆ្នាំទី២A បានចំណាយពេលសិក្សានៅផ្ទះ តិចជាង ២ ម៉ោង; Ha: និស្សិតថ្នាក់ទី ២A បានចំណាយពេលសិក្សានៅផ្ទះ ≠ ២ ម៉ោង

56 / 60

នៅក្នុង hypothesis testing មានកំហុស(error) ពីរដែលអាចកើតឡើង។ តើឃ្លាខាងក្រោមនេះ ឃ្លាមួយណាដែលត្រឹមត្រូវទៅនឹងនិយមម័យរបស់ error.

a. . Type II error កើតឡើងនៅពេលដែលយើងមិនទាត់ចោល H0 នៅពេលដែលវាមិនពិត

b. . Type II error កើតឡើងនៅពេលដែលយើងទាត់ចោល H0 នៅពេលដែលវាពិត

c. . Type II error កើតឡើងនៅពេលដែលយើងមិនទាត់ចោល H0 នៅពេលដែលវាពិត

d. . Type II error កើតឡើងនៅពេលដែលយើងទាត់ចោល H0 នៅពេលដែលវាមិនពិត

57 / 60

ការសិក្សាទៅលើសំណាកនៃនិស្សិតឆ្នាំទី២A ចំនួន១៥នាក់ រកឃើញថានិស្សិតបានចំណាយពេលសិក្សានៅផ្ទះរយៈពេលមធ្យម ១២០នាទី ក្នុង១ ថ្ងៃ ហើយមាន standard deviation ៦០នាទី។

a. . គេអាចនិយាយថា និស្សិតឆ្នាំទី២A ចំនួន៩៥%បានចំណាយពេលសិក្សាស្មើនឹង ១២០នាទី

b. . គេអាចនិយាយថា និស្សិតឆ្នាំទី២A បានចំណាយពេលសិក្សានៅផ្ទះច្រើនជាង ១០០នាទី

c. . គេត្រូវប្រើប្រាស់ Inferential statistics បន្ថែមទៀតដើម្បីអាចធ្វើការសន្និដ្ឋានទៅលើក្រុមនិស្សិតឆ្នាំទី ២A ទាំងអស់បាន

d. . គេមិនទាន់អាចសន្និដ្ឋានបាននៅឡើយ ដោយសារលទ្ឋផលដែលទទួលបាននេះមិនអាចតំណាងអោយនិស្សិតឆ្នាំទី ២A ទាំងអស់បានទេ

58 / 60

តើអ្វីខ្លះដែលមិនមែនជាផ្នែករបស់Descriptive statistics?

a. . Measure of dispersion

b. . Probability

c. . Measure of Central of tendency

d. . Estimation & Hypothesis testing

59 / 60

ការសិក្សាទៅលើសំណាកនៃនិស្សិតឆ្នាំទី២B ចំនួន១៥នាក់ រកឃើញថានិស្សិតបានចំណាយពេលសិក្សានៅបណ្ណាល័យជាមធ្យម 50 នាទី ក្នុង១ ថ្ងៃ។ គេចង់ធ្វើ hypothesis testing ដោយសរសេថា H0: រយះពេលសិក្សាក្នុងបណ្ណាល័យស្មើ ៦០នាទី និង Ha: រយះពេលសិក្សាក្នុងបណ្ណាល័យ ≠ ៦០នាទី។ ការធ្វើតេស្តបែបនេះជាប្រភេទ

a. . One sided, two sample hypothesis testing

b. . Two sided, two sample hypothesis testing

c. . Two sided, one sample hypothesis testing

d. . One sided, one sample hypothesis testing

60 / 60

ការសិក្សាទៅលើសំណាកនៃនិស្សិតឆ្នាំទី២B ចំនួន១៥នាក់ រកឃើញថានិស្សិតបានចំណាយពេលសិក្សានៅបណ្ណាល័យជាមធ្យម 50 នាទី ក្នុង១ ថ្ងៃ។ គេចង់ធ្វើ hypothesis testing ដោយមាន H0: រយះពេលសិក្សាក្នុងបណ្ណាល័យ≥ ៦០នាទី និង Ha: រយះពេលសិក្សាក្នុងបណ្ណាល័យ < ៦០នាទី។ ការធ្វើតេស្តបែបនេះជាប្រភេទ

a. . Two sided, one sample hypothesis testing

b. . One sided, one sample hypothesis testing

c. . One sided, two sample hypothesis testing

d. . Two sided, two sample hypothesis testing

Your score is

The average score is 88%

Any comments?

Any problems/errors or mistakes found while testing, please let us know for modification!

និស្សិតអាចប្រាប់មកកាន់ពួកយើងបានដើម្បីកែកំហុស ឬអំពីបញ្ហាដោយអចេតនាណាមួយដែលកើតមានកំឡុងពេលធ្វើតេស្ត