Question: what is this Given a sample: 1.6, 5.2, 2.8, 3.7, 4.0 What's the sample mean? What's the sample standard deviation? (Round to two decimals) What's

what is this

Given a sample: 1.6, 5.2, 2.8, 3.7, 4.0 What's the sample mean? What's the sample standard deviation? (Round to two decimals) What's the z-score for 2.8? (Round to two decimals) What's the percentile rank (an integer) for 2.8

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