Homework SourseA researcher wants to know if the mean hours of television w
A researcher wants to know if the mean hours of television watched per month is different between adults and children. The researcher does not know what the standard deviation for either population is. What sort of test should the researcher conduct to determine if there is a difference?
A paired sample t-test
A one sample t-test
A two sample z-test
A two sample t-test
| A. | A paired sample t-test | |
| B. | A one sample t-test | |
| C. | A two sample z-test | |
| D. | A two sample t-test |
Solution
Answer: D. A two sample t-test
Because we test two groups and do not know the population variance.
