Question: At = 0.01, test the claim that the 200 test scores shown in the frequency distribution are normally distributed. (a) Find the expected frequencies,

At α = 0.01, test the claim that the 200 test scores shown in the frequency distribution are normally distributed.

Class boundaries 49.5-58.5 58.5-67.5 67.5-76.5 76.5-85.5 85.5-94.5 19 61 82 34 Frequency,

(a) Find the expected frequencies,

(b) Find the critical value and identify the rejection region,

(c) Find the chi-square test statistic,

(d) Decide whether to reject or fail to reject the null hypothesis,

(e) Interpret the decision in the context of the original claim.

Class boundaries 49.5-58.5 58.5-67.5 67.5-76.5 76.5-85.5 85.5-94.5 19 61 82 34 Frequency, f

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