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Textbook Expert
Textbook ExpertVerified Tutor
5 Nov 2021

Given information

Number of people surveyed, n = 200

Mean of the sample, = 8.2

The standard deviation of the population, =2.2

 

Step-by-step explanation

Step 1.

Here,

1. Size of the sample (n) > 25

2. Population standard deviation () is known.

 

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