Answered

The mean of the last statistics test was 72 with a standard deviation of 8. If 50 students were surveyed, how many would you expect to have scored less than 64?



Answer :

Answer:

c

Step-by-step explanation:

Pat's last statistics test score was 72. If the instructor tells Pat that the grade distribution was approximately normal, the class mean was 67, and the standard deviation was 3, which of the following is correct? a. A score of 72 is never good. B. Pat should be worried about this score, because many other students did better