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# Confidence interval for the population standard deviation.

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Use the given confidence level to find the 80% confidence interval for the population standard deviation.

n=16, X = 66000, s= \$7778

Assume that a simple random sample of a population has been selected from a population that has a normal distribution, Use the formula for X2( chi square distribution) and the chi-square distribution table

https://brainmass.com/statistics/chi-squared-test/confidence-interval-population-standard-deviation-158586

#### Solution Preview

Use the given confidence level to find the 80% confidence interval for the population standard deviation.

n=16, X = 66000, s= \$7778

Assume that a simple random sample of a population has been selected from a population that has a normal distribution, Use the formula ...

#### Solution Summary

The solution finds the confidence interval for the population standard deviation.

\$2.19