Exam scores of 40 students in a statistics class are shown. (a) Estimate the mean and standard...1 answer below »

Exam scores of 40 students in a statistics class are shown.
(a) Estimate the mean and standard deviation from the sample. (b) Assuming that
the data are from a normal distribution, define bins by using method 3 (equal
expected frequencies). Use 8 bins. (c) Set up an Excel worksheet for your
chi-square calculations, with a column showing the expected frequency for each
bin (they must add to 40). (d) Tabulate the observed frequency for each bin and
record it in the next column. (e) Carry out the chi-square test, using α =
.05. Can you reject the hypothesis that the exam scores came from a normal
population? ExamScores

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July 23, 2021For details please...

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