Refer to PROBLEM A of the excel file. What is the best point estimate of the true population variance? 60.18 false 60.21 false 60.49 true 60.63 false Single Refer to PROBLEM A of the excel file. What is the degree of freedom? 7 false 8 false 9 true 10 false Single Refer to PROBLEM A of the excel file. What are the chi-square values? 19.02 and 2.70 true 19 and 2.72 false 18.97 and 2.68 false 18.88 and 2.59 false Single Refer to PROBLEM A of the excel file. Based on the 10 samples, what is the 95% confidence interval for the true population variance for the weight (in grams) of ten mangoes? (28.69, 202.1) false (28.48, 200.6) false (28.49, 200.7) false (28.62, 201.63) true Single Refer to PROBLEM B of the excel file. What is the best point estimate of the true population variance? 117.82 true 117.96 false 118.05 false 118.2 false Single Refer to PROBLEM B of the excel file. What is the degree of freedom? 7 false 8 false 9 false 10 true Single Refer to PROBLEM B of the excel file. What are the chi-square values? 19.92 and 3.17 false 20.48 and 3.25 true 21.8 and 3.76 false 22.08 and 4.11 false Single Refer to PROBLEM B of the excel file. Based on the 10 samples, what is the 95% confidence interval for the true population variance for the weights (in grams) of 11 packs of 1-kg french fries? (57.6, 362.95) false (57.64, 363.23) false (57.53, 362.52) true (57.71, 363.69) false Single What is the confidence interval for the population variance given s^2=6.7, n=30, α=0.05? (3.56, 10.23) false (3.7, 11.04) false (4.25, 12.11) true (4.81, 13.19) false Single What is the confidence interval for the population variance given s^2=4.5, n=20, α=0.05? (2.6, 9.6) true (2.7, 9.68) false (2.73, 9.7) false (2.8, 9.77) false Single