An inspector tested the weights of one pound packages of

Last updated: 3/31/2023

An inspector tested the weights of one pound packages of hamburger twice Each time 40 random packages were tested The mean was 1 08 for both samples but the first sample had a standard deviation of 0 2 and the second sample had a standard deviation of 0 5 The inspector found the 95 confidence level for both samples The first sample with a standard deviation of 0 2 had a confidence interval of The second sample with a standard deviation of 0 5 had a confidence interval of Confidence Level as a percent C First sample 1 03 to 1 13 Second sample 0 95 to 1 21 O First sample 0 95 to 1 21 Second sample 1 03 to 1 13 O First sample 1 018 to 1 14 Second sample 0 925 to 1 24 O First sample 0 925 to 1 23 Second sample 1 018 to 1 14 90 95 99 z value 1 645 1 960 2 576