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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

 Apr 17, 2019
 #1
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+2

[ Age  -  Mean ]

____________   = z score     .....fill in what we know

    Std Dev

 

[ Age - 35 ]

________     =  -2.1              multiply both sides by  8.2

     8.2

 

Age  - 35  =  -17.22         add 35 to both sides

 

Age  =  17.8  years 

 

 

cool cool cool 

 Apr 17, 2019

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