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Textbook Expert
Textbook ExpertVerified Tutor
13 Nov 2021

Given information

 The mean cost of a daily newspaper =$1.00; & the standard deviation =20¢; The sample size(n)=12; Here, alpha =0.01;

Step-by-step explanation

Step 1.

First, we will identify  and ;

: The mean cost of a daily newspaper is $1.00 ( =$1.00).

: The mean cost of a daily newspaper is not $1.00 (  $1.00).

Here, alpha=0.01;

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