Mathematics

Mathematics, 18.05.2021 17:30, neariah24

A teacher claims that the boys in her classes are taller than the average 69 inches for boys in this age group. The sample of 30 boys had an average height of 67.5 in. If
the standard deviation for the height of all boys in this age group is 2.75 inches, what
is the test statistic (z)?

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