A report from a drug company states that the confidence interval of the amount in milligrams of active ingredient in one of their pills is 59 934 60 046 that they tested a sample of ten thousand pills and that the mean and standard deviation of the active ingredient were found to be 59 99 mg and 1 997 mg respectively The report did not mention the confidence level What is it W O 99 5 O 99 O 99 7 99 9 85 90 95 1 282 1 440 1 645 1 960 Confidence Interval 80 z value 99 5 99 7 99 9 2 576 2 807 3 3 291 95 4 99 2