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7. Sampling Distributions & Confidence Intervals: Mean
7. Sampling Distributions & Confidence Intervals: Mean / Confidence Intervals for Population Mean / Problem 6
Problem 6

The following are the cholesterol levels (in mg/dL\text{mg/dL}) of 1010 randomly selected adults from a health survey. Assume the cholesterol levels are normally distributed. Construct a 99%99\% confidence interval for the population standard deviation.
Data: 180,190,195,200,210,220,225,230,240,250180, 190, 195, 200, 210, 220, 225, 230, 240, 250