The average grade for an exam is 74, the standard deviation is 7 and the grades are curved to follow a normal distribution. Find the probability that a student will get a grade less than 81. Select one: O a. 0.6451 O b. 0.8512 c. 0.8413 d. 0.716

The average grade for an exam is 74, the standard deviation is 7 and the grades are curved to follow a normal distribution. Find the probability that a student will get a grade less than 81. Select one: O a. 0.6451 O b. 0.8512 c. 0.8413 d. 0.716

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Estimation

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Question

The average grade for an exam is 74, the standard deviation is 7 and the grades are curved
to follow a normal distribution. Find the probability that a student will get a grade less than
81.
Select one:
O a. 0.6451
O b. 0.8512
c. 0.8413
O d. 0.716

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