Mathematics, 23.12.2021 20:30 Geo777

Find the 80% confidence intervals for the variance and standard deviation of the ages of seniors at Oak Park College if a random sample of 30 students has a standard deviation of 2.8 years. Assume the variable is normally distributed.
Use the chi-square distribution table to find any chi-square values to three decimal places. Round the final answers to one decimal
place.

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