A hospital emergency room has collected a sample of 50 to estimate the mean number of visits
per day. The sample standard deviation was found to be 30 . Using a 95 percent confidence level,
what is its margin of error? 10.2 7.1 15.5 8.5 11.4.
A hospital emergency room has collected a sample of 50 to estimate the.pdf
1. A hospital emergency room has collected a sample of 50 to estimate the mean number of visits
per day. The sample standard deviation was found to be 30 . Using a 95 percent confidence level,
what is its margin of error? 10.2 7.1 15.5 8.5 11.4