Question

The weekly incomes of a large group of executives are normally distributed with a mean of $2,000 and a standard deviation of $100. What is the z-score for an income of $2,200?

Answer 1

2.

Explanation:

Using the formula `z=(x-barx)/s`, where `x` is the value you're looking at, `barx` is the mean of the data set, and `s` is the sample standard deviation, we can plug in these numbers to find the answer:

`z=(2,200-2,000)/100=2`

Hope this helps!