The mean score for freshmen on an aptitude test at a certain college is 570, with a standard deviation of 60. Assume the
Posted: Mon Jul 11, 2022 11:55 am
The mean score for freshmen on an aptitude test at a certain college is 570, with a standard deviation of 60. Assume the means to be measured to any degree of accuracy. What is the probability that two groups selected at random, consisting of 72 and 60 students, respectively, will differ in their mean scores by (a) more than 14 points? (b) an amount between 3 and 8 points? Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table.