(Answered) Historically stat 2480 students average 80 points on

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Historically, Stat 2480 students average 80 points on midterms.

One section earned the following scores: 90, 78, 73, 62, 77, 75, 61, 63, 68, 78, 75, 80, 87, 73, 78, 75, 78, 88, 70.

Assume the test scores for the section represent a random sample from a normally distributed population.

Test whether the section's scores were significantly different from 80 (alpha=.05)

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