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Which of the following will not result in a narrower confidence interval? a- Smaller sample mean...

Which of the following will not result in a narrower confidence interval?

a- Smaller sample mean

b- Larger sample size

c- Smaller population standard deviation

d-Lower confidence level

d-Lower confidence level

Math   Statistics-And-Probability   
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Answer #1

The correct option is (d).

Because the length of the confidence interval is vary with Margin of Error i.e. increase in the margin of error, the length of the confidence interval also increase.

,z,

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