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Confidence interval for variance

Assume that the heights of women are normally distributed. A random sample of 20 women have a mean height of 62.5 inches and a standard deviation of 1.3 inches. Construct a 98% confidence interval for the population variance, (lower case sigma)2.
a.(0.9,2.1)
b.(0.9,4.4)
c.(0.7,3.2)
d.(0.9,4.2)

Solution Summary

This solution gives the step by step method for computing confidence interval for variance are given.

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