Statistics-population variance-confidence interval

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Reference no: EM13105781

The grades of a sample of 5 students, selected from a large population, are given below.

Grade

a. Determine a point estimate for the variance of the population.

b. Determine a 95% confidence interval for the variance of the population.

c. At 90% confidence, test to determine if the variance of the population is significantly more than 50.

Reference no: EM13105781

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