Mathematics, 20.10.2020 01:01 jstoners
A 95% confidence interval is found to be (24, 30). The sample standard deviation is 7.5, and the sample size is 25. If you wanted a smaller interval what could you do?
A. increase the confidence level to 99.7%.
B. increase the sample size to 36.
C. decrease the sample size to 20.
D. None of these.
Answers: 1
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A 95% confidence interval is found to be (24, 30). The sample standard deviation is 7.5, and the sam...
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