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8. Sampling Distributions & Confidence Intervals: Proportion
8. Sampling Distributions & Confidence Intervals: Proportion / Confidence Intervals for Population Proportion / Problem 15
Problem 15

The weights (in kilograms) of 4141 randomly selected boxes of sugar had a sample standard deviation of 1.8 kg1.8\text{ kg}. Assume the weights are normally distributed. Using a 98%98\% confidence level, construct the confidence interval for the population variance (σ2\sigma^2). Also, interpret the results.