How Many Tissues Should the Kimberly Clark Corporation Package of Kleenex

question 132

Short Answer

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 alternative you wanted to test was H1 : $\mu$ $\lt$ 60 .State the correct rejection region for $\alpha$ = 0.05. a) Reject $H _ { 0 }$ if $t > 1.6604$ .
b) Reject $H _ { 0 }$ if $t < - 1.6604$ .
c) Reject $H _ { 0 }$ if $t > 1.9842$ or $Z < - 1.9842$ .
d) Reject $H _ { 0 }$ if $t < - 1.9842$ .

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