How many tissues should the Kimberly Clark Corporation package of Kleenex contain? Researchers determined that 60 tissues is the mean 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: Suppose the alternative you wanted to test was .State the correct rejection region for
A)Reject
B)Reject
C)Reject
D)Reject

Question

How many tissues should the Kimberly Clark Corporation package of Kleenex contain? Researchers determined that 60 tissues is the mean 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:  Suppose the alternative you wanted to test was  .State the correct rejection region for 
A)Reject 
B)Reject 
C)Reject 
D)Reject

Quizplus · Accepted Answer

The alternative hypothesis states that the true mean number of tissues used during a cold is greater than 60. Therefore, we need to reject the null hypothesis (that the true mean is equal to 60) in favor of the alternative if the sample mean is greater than 60. Using a one-tailed test with a significance level of 0.05, the rejection region is in the upper tail of the t-distribution with degrees of freedom equal to 99. To find the critical t-value, we can use a t-table or a calculator. The critical t-value for a one-tailed t-test with 99 degrees of freedom and a 0.05 significance level is approximately 1.66. Therefore, we reject the null hypothesis if the sample mean is greater than 60 + 1.66*(standard error of the mean).

How Many Tissues Should the Kimberly Clark Corporation Package of Kleenex