Textbook ExpertVerified Tutor
15 Nov 2021
Given information
The mean workweek for engineers = 60 hours, The sample size(n)=10; degree of freedom(df)=10-1=9;
Step-by-step explanation
Step 1.
The sample mean for 70; 45; 55; 60; 65; 55; 55; 60; 50; 55;
=( 70+45+55+60+65+55+55+60+50+55)/10=570/10=57;
The sample standard deviation(s);
(s)=
(s)=7.15;
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