We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive pseudonymised information about your use of our website. cookie policy and privacy policy.
 
+0  
 
0
71
1
avatar+28 

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
avatar+100571 
+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

12 Online Users

avatar
avatar
avatar