가이드 코스 05:53Constructing Confidence Intervals for Variance or Standard Deviation Example 1Patrick Ford73views
가이드 코스 06:05Constructing Confidence Intervals for Variance or Standard Deviation Example 2Patrick Ford70views1rank
객관식What is wrong with expressing the confidence interval 3.8<σ2<6.43.8<\(\sigma\)^2<6.4 as σ2=5.1±1.3\(\sigma\)^2=5.1\(\pm\)1.3?99views
객관식A delivery service tracks the weights of its packages. A sample of 20 packages has a variance of 4.5 lbs2. Construct a 95% conf. int. for the population variance. Assume a normal distribution.92views
06:44
