Question

Define the random variables$X$ and$\frac{}{x}$ in words.

Short answer

$X-$Indicates the amount of time the patients have to wait before being called back to be examined.

$\overline{X}$$-$Denotes the sample mean.

Step-by-step solution

Given information

Given in the question that, A hospital is trying to cut down on emergency room wait times. It is interested in the amount of time patients must wait before being called back to be examined. An investigation committee randomly surveyed $70$patients. The sample mean was $1.5$hours with a sample standard deviation of $0.5$hours.

Explanation

The random variable $\mathrm{X}$indicates the amount of time the patients have to wait before being called back to be examined.

$\overline{\mathrm{X}}$denotes the sample mean. The average amount of time consumed waiting by the $70$patients before being called back to be examined.