The manager of a warehouse would like to know how many errors are made when a product's serial number is read by a bar-code reader. Six samples are collected of the number of scanning errors: 36, 14, 21, 39, 11, and 2 errors, per 1,000 scans each.

Step-by-step explanation:

Given

Solving (a): The mean of the 6 samples.

This is calculated as:

So, we have:

Solving (b): The sample standard deviation.

This is calculated using:

So, we have:

0.6, 3/5, and 6% are the 3 same portion.

but, when they're all changed to a decimal they would equal to 0.6.

hope this , good luck!