Homework Answers
Answer)
As the population s.d is known here we can use standard normal z table to estimate the answer.
Margin of error (MOE) = Z*S.D/√N
critical value z from z table for 95% confidence level is 1.96
S.d = 14
1 = 1.96*14/√n
N = 753
Correct answer is 753 only
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