Question

Enter the answer to the nearest tenth. Another home business has an average income of $1.200.00 per month with a standard deviation of $100.00. If the income in a given month is $1,030.00, what z-score corresponds to this value?

1 0

-1.5

-1.7

the answer is D.-1.7

Answer 1

Answer: -1.7

Explanation:

Given : Another home business has an average income of $1.200.00 per month with a standard deviation of $100.00.

i.e.
`\mu=\$1200.0`

`\sigma=\$100.00`

Let x represents the monthly income.

Since .
`z=(x-\mu)/(\sigma)`

For x= 1030 , we have

`z=(1030-1200)/(100)=-1.7`

Hence, the required z-score = -1.7