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 numberof tissues used during a cold: $\bar { X } = 52$ , S = 22.Using the sample information provided, calculate the value of the test statistic.
A)t = (52- 60 ) / 2 2
B)t = (52-60 ) / ( 2 2 / 100 )
C)t = ( 52 - 60 ) / ( 2 2 / 100 2 )
D)t =(52 - 60 ) /( 2 2 / 1 0 )

Question

Quizplus · Accepted Answer

The correct formula for the test statistic in this context is $ t = \frac{\bar{X} - \mu}{(S/\sqrt{n})} $, where $\bar{X}$ is the sample mean, $\mu$ is the population mean, $S$ is the sample standard deviation, and $n$ is the sample size. Substituting the given values ($\bar{X} = 52$, $\mu = 60$, $S = 22$, $n = 100$) into the formula gives the calculation in option D.

How Many Tissues Should the Kimberly Clark Corporation Package of Kleenex