Question

a sample of 15 hospitals in texas had a mean wait time of 48 minutes. texas hospitals, as a whole, have a mean wait time of 53 minutes. which of the following accurately describes this information? (1 point)

• ( \bar{x}=48 ) minutes and ( mu = 53 ) minutes
• ( mu = 48 ) minutes and ( \bar{x}=53 ) minutes
• ( p = 48 ) minutes and ( p = 53 ) minutes
• ( \bar{x}=48 ) minutes and ( \bar{z}=53 ) minutes

Explanation:

In statistics, $\bar{x}$ (x - bar) represents the sample mean, and $\mu$ (mu) represents the population mean. The sample of 15 hospitals has a mean wait time of 48 minutes, so that's the sample mean ($\bar{x}$). Texas hospitals as a whole (the population) have a mean wait time of 53 minutes, so that's the population mean ($\mu$). So we identify that $\bar{x} = 48$ minutes and $\mu = 53$ minutes, which matches the first option.

Answer:

A. $\bar{x} = 48$ minutes and $\mu = 53$ minutes