Researchers determined that 60 Kleenex tissues is the average number of tissues used during a cold. Suppose a random sample of 100 Kleenex users yielded the following data on the number of tissues used during a cold: = 52 and s = 22. Suppose the test statistic does fall in the rejection region at = 0.05. Which of the following conclusions is correct?
A) At= 0.05, we do not reject
B) At= 0.05, we reject
C) At= 0.05, we accept
D) At= 0.10, we do not reject
E) none of these

Question

Researchers determined that 60 Kleenex tissues is the average number of tissues used during a cold. Suppose a random sample of 100 Kleenex users yielded the following data on the number of tissues used during a cold:  = 52 and s = 22. Suppose the test statistic does fall in the rejection region at  = 0.05. Which of the following conclusions is correct?
A) At= 0.05, we do not reject 
B) At= 0.05, we reject 
C) At= 0.05, we accept 
D) At= 0.10, we do not reject 
E) none of these

Quizplus · Accepted Answer

Since the test statistic falls in the rejection region at a significance level of 0.05, we reject the null hypothesis. The null hypothesis is that the mean number of tissues used during a cold is equal to 60, while the alternative hypothesis is that it is less than 60. Therefore, we can conclude that the sample data provides evidence that the mean number of tissues used during a cold is less than 60.

Researchers Determined That 60 Kleenex Tissues Is the Average Number