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Question

A sample of size 

=

n

74

 is drawn from a population whose standard deviation

is =

σ

12

.

Part 1 of 2

(a) Find the margin of error for a 

95

%


 confidence interval for μ

. Round the answer to at least three decimal places.The margin of error for a 95

%

 confidence interval for μ

 is  

.



Part 2 of 2

(b) If the sample size were 

=

n

60


, would the margin of error be larger or smaller?

Top Answer

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