Grades received on computerized examinations can often be approximated by a normal distribution. Assume that the average

Question:

Grades received on computerized examinations can often be approximated by a normal distribution. Assume that the average grade on a statistics examination is 73.25 points and the standard deviation is 12.58 points.

a. What is the probability that a grade selected at random will be greater than 80.50 points?

b. What is the probability that a grade selected at random will be between 60.25 and 70.75 points?

c. What is the probability that a grade selected at random will be exactly 90.23 ?

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For  book-img-for-question
Question Posted: