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A sample of 22 items provides a sample standard deviation of 6. (a) Compute the 90%...

A sample of 22 items provides a sample standard deviation of 6.

(a)

Compute the 90% confidence interval estimate of the population variance. (Round your answers to two decimal places.)

________ to _________

(b)

Compute the 95% confidence interval estimate of the population variance. (Round your answers to two decimal places.)

________ to _______

(c)

Compute the 95% confidence interval estimate of the population standard deviation. (Round your answers to one decimal place.)

________ to _________

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