How Many Tissues Should the Kimberly Clark Corporation Package of Kleenex

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: $\bar { X } = 52$ , S = 22.Suppose the test statistic does fall in the rejection region at $\alpha$ = 0.05.Which of the following conclusion is correct? a) At $\alpha = 0.05$ , there is not sufficient evidence to conclude that the mean number of tissues used during a cold is 60 tissues.
b) At $\alpha = 0.05$ , there is sufficient evidence to conclude that the mean number of tissues used during a cold is 60 tissues.
c) At $\alpha = 0.05$ , there is insufficient evidence to conclude that the mean number of tissues used during a cold is not 60 tissues.
d) At $\alpha = 0.10$ , there is sufficient evidence to conclude that the mean number of tissues used during a cold is not 60 tissues.