What is the conclusion to the test

Reference no: EM131807784

Question: An economics professor states on her syllabus that final grades will be distributed using the normal distribution. The final averages of 300 students are calculated, and she groups the data into a frequency distribution as shown below. The mean and the standard deviation of the final averages are x‾ = 72 and s 10.

a. Using the goodness-of-fit test for normality, state the competing hypotheses in order to determine if we can reject the professor's normality claim.

b. Calculate the value of the test statistic.

c. At a 5% significance level, what is the critical value?

d. What is the conclusion to the test?

Reference no: EM131807784

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