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

Step-by-step 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 . $z=\dfrac{x-\mu}{\sigma}$

For x= 1030 , we have

$z=\dfrac{1030-1200}{100}=-1.7$

Hence, the required z-score = -1.7