Posted by **Mandi** on Wednesday, February 13, 2013 at 10:58pm.

Suppose a population is sampled and the sample mean is 16.8. The sample standard deviation is 6.0 I am to assume the sample is larger than 30) and the sample size is 65.

How do I calculate 95% and 98% confidence intervals.

State which interval wider and why please.

How would I also explain the results of the 95% confidence interval to my boss.

Please help

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