Question

question 7
do tv viewers differ, on average, in terms of the amount of television that they watch during the month of january as opposed to june? a researcher conducted a hypothetical study, where she randomly selected 50 tv viewers and recorded the number of minutes of television watched during january and then again in july. the researcher wanted to determine whether there is a difference in mean number of minutes of television viewing in january and in july.
what hypothesis testing technique should the researcher use to analyze the data?
a. anova
b. paired t - test
c. z - test for the population mean
d. two - sample t - test

Explanation:

The researcher has paired data (same 50 TV - viewers' viewing times in January and July). A paired t - test is used when we have two related samples (paired observations) to test for a difference in means. ANOVA is for comparing means of more than two groups. A z - test for population mean is used when population standard deviation is known and we are testing a single mean. A two - sample t - test is for independent samples.

Answer:

B. Paired t - test