Suppose the scores of students on an exam are normally distributed with a mean of 423 and a standard deviation of 62. Then approximately 68% of the exam scores lie between the integers and , and the...

Suppose the scores of students on an exam are normally distributed with a mean of 423 and a standard deviation of 62. Then approximately 68% of the exam scores lie between the integers

and

, and the mean is halfway between these two integers.

Aug 16, 2022