use the values on the number line to find the sampling error.\nthe sampling error is □.

Explanation:

Step1: Recall the formula for sampling error

The sampling error is given by (| \bar{x}-\mu |), where (\bar{x}) is the sample mean and (\mu) is the population mean.

Step2: Substitute the given values

We have (\bar{x} = 3.5) and (\mu=3.72). Then (| \bar{x}-\mu |=|3.5 - 3.72|).

Step3: Calculate the absolute value

(|3.5 - 3.72|=|- 0.22| = 0.22)

Answer:

(0.22)