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Problem

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Textbook Expert
Textbook ExpertVerified Tutor
10 Nov 2021

Given information

The number of girls in the ice skating class for ages 8-12 and for the beginner level is counted. Out of the chosen sample, 64 are girls and 16 are boys.
 
From the previous task, it is found that n=80 and p'=0.8.
From the previous task, the area in both tails is 0.08.

Step-by-step explanation

Step 1.

Divide the area in both tails by 2 to find the area in each tail:

 

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