Question

A study of wait times at Texas roadhouse a random sample of 63 patrons were asked how long their wait times was. The study concluded that their wait times were normally distributed with a mean wait time of 28.4 minutes and a standard deviation of 3.6 minutes. what range of values represents the middle 95% of the data?

Answer 1

Let's use Probability mass function:

`P(X)=\frac{1}{\sigma\sqrt[]{2\pi}}e^{-((x-\mu)^2)/(2\sigma^(^2))}`

Where:

`P(X)=(0,22.3)`