Given a sample: \( 1.6,5.2,2.8,3.7,4.0 \) What's the sample mean? 3.46 \( \square \) What's the sample standard deviation? 1.21 \( \square \) Round to two decimals) What's the 2 -score for 28 ? \( \square \) \( -0.55 \) (Round to two decimals) What's the percentile rank (an integer) for 2.8 ? \( \square \) 60
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So, (1.6 + 5.2 + 2.8 + 3.7 + 4.0) / 5 = 3.46. Show more…
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