X~N (? = 30 and ?2 = 100) has a normal distribution, a) What is the probability that X is between 30 and 50? b) What is the probability that X is between 20 and 40? c) What is the probability that X is between 35 and 45? d) What is the probability that X is less than 25? e) What is the probability that X is greater than 20?

X~N (? = 30 and ?2 = 100) has a normal distribution, a) What is the probability that X is between 30 and 50? b) What is the probability that X is between 20 and 40? c) What is the probability that X is between 35 and 45? d) What is the probability that X is less than 25? e) What is the probability that X is greater than 20?

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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X~N (? = 30 and ?2 = 100) has a normal distribution,

a) What is the probability that X is between 30 and 50?

b) What is the probability that X is between 20 and 40?

c) What is the probability that X is between 35 and 45?

d) What is the probability that X is less than 25?

e) What is the probability that X is greater than 20?

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