Test scores have a stadard deviation of 18 and a mean of 69. if at random, 49 test scores are picked what is the probability than the mean score is less than 62?
0.0050
0.0033
0.9967
0.3859
Test scores have a mean of 69 and a standard deviation of 18. If 49 test scores are randomly selected, find the probability the mean score is greater than 75?
0.9901
0.0099
0.5999
0.3707
Emergency room wait times have a mean of 25.2 minutes and a standard deviation of 15.7 minutes. If 36 wait times are randomly selected, find the probability the mean wait time is between 22 and 28 minutes?
0.0336
0.9644
0.3783
0.6217
Emergency room wait times have a mean of 25.2 minutes and a standard deviation of 15.7 minutes. If 36 wait times are randomly selected, find the probability the mean wait time is greater than 30 minutes?
0.0336
0.9664
0.3783
0.6217