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: X = 52, S = 22. Suppose the test statistic does fall in the rejection region at = 0.05. Which of the following conclusion is correct?

Select one:a. At = 0.05, there is sufficient evidence to conclude that the mean number of tissues used during a cold is 60 tissues.b. At = 0.10, there is sufficient evidence to conclude that the mean number of tissues used during a cold is not 60 tissues.c. At = 0.05, there is insufficient evidence to conclude that the mean number of tissues used during a cold is not 60 tissues.d. At = 0.05, there is not sufficient evidence to conclude that the mean number of tissues used during a cold is 60 tissues.