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Question

# A sample of size =n74 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?

margin of error... View the full answer

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