Scores on a recent national statistics exam were normally


Scores on a recent national statistics exam were normally distributed with a mean of 62 and a standard deviation of 4.

a. What is the probability that a randomly selected exam will have a score of at least 55?

b. What percentage of exams will have a score of 74?

c. What percentage of exams will have scores between 56 and 72?

d. What percentage of exams will have scores less than 66?

e. If the bottom 1% of students received failing scores, what is the highest failing score?

Request for Solution File

Ask an Expert for Answer!!
Other Subject: Scores on a recent national statistics exam were normally
Reference No:- TGS0660547

Expected delivery within 24 Hours