Suppose that scores on an exam are normally distributed with mean 80 and standard deviation 5, and that scores are not rounded. a. What is the probability that a student scores higher than 85 on the exam? b. Assume that exam scores are independent and that 10 students take the exam. What is the probability that 4 or more students score 85 or higher on the exam?
Suppose that scores on an exam are normally distributed with mean 80 and standard deviation 5, and that scores are not rounded. a. What is the probability that a student scores higher than 85 on the exam? b. Assume that exam scores are independent and that 10 students take the exam. What is the probability that 4 or more students score 85 or higher on the exam?
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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