a simple random sample of size n is drawn. the sample mean, x̄, is found to be 29.5 and the sample standard deviation, s, is found to be 8.4
a) construct a 90% confidence interval for μ if the sample size, n, is 40
b) construct a 90% confidence interval for μ if the sample size n is 100
c) how does increasing the sample size affect the
margin of error, E
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