A bunch of students were taking an exam. The results is assume to be a normal probability distribution with a mean of 112 and standard deviation of 8. a. What is the probability that someone likely to have less than 115 successes? b. What is the probability of 100 to 110 successes? c. What is the probability of 130 or more successes? d. What score will some need to have in order to be within the top 5%.

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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A bunch of students were taking an exam. The results is assume to be a normal
probability distribution with a mean of 112 and standard deviation of 8.
a. What is the probability that someone likely to have less than 115 successes?
b. What is the probability of 100 to 110 successes?
c. What is the probability of 130 or more successes?
d. What score will some need to have in order to be within the top 5%.
Transcribed Image Text:A bunch of students were taking an exam. The results is assume to be a normal probability distribution with a mean of 112 and standard deviation of 8. a. What is the probability that someone likely to have less than 115 successes? b. What is the probability of 100 to 110 successes? c. What is the probability of 130 or more successes? d. What score will some need to have in order to be within the top 5%.
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