Question

The ages of people entering a pie eating contest are normally distributed with a mean of 35 years and a standard deviation of 8.2 years.
What is the age of a pie eating contestant with a z-score of −2.1 ?

Enter your answer, rounded to the nearest tenth, in the box.

Answer 1

Answer:

The ages of people entering a pie eating contest are normally distributed with a mean of 35 years and a standard deviation of 8.2 years.

What is the age of a pie eating contestant with a z-score of −2.1 ?

[ Age - 35 ] / [ 8.2]  =  -2.1     multiply both sides by 8.2

Age - 35   =  -17.22       add 35 to both sides

Age  ≈ 17.8  years

I am doing the test right now !!! ;P