Mathematics, 24.03.2020 05:31 jackieanguiano3700
Determine the sample size needed to construct a 95% confidence interval to estimate the average GPA for the student population at a colege with a margin of error equal to 0.03. assume the standard deviation of the GPA is 2.0
Answers: 3
level, that is the subtraction of 1 by the confidence interval divided by 2. So:
.
, so 
is the standard deviation of the population and n is the size of the sample.
. So
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Determine the sample size needed to construct a 95% confidence interval to estimate the average GPA...
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