Let X be a N(14,81) random variable. Use the normal table in your book to answer the following questions. (a) What is P (−1 ≤ X ≤ 18)? (b) What is P (X ≥ 29.1)? (c) Calculate d such that P (X ≤ d) = .9207.

Let X be a N(14,81) random variable. Use the normal table in your book to answer the following questions. (a) What is P (−1 ≤ X ≤ 18)? (b) What is P (X ≥ 29.1)? (c) Calculate d such that P (X ≤ d) = .9207.

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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Question

Let X be a N(14,81) random variable. Use the normal table in your book to answer the following questions.
(a) What is P (−1 ≤ X ≤ 18)?

(b) What is P (X ≥ 29.1)?
(c) Calculate d such that P (X ≤ d) = .9207.

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