Young's modulus is a quantitative measure of stiffness of an elastic material. Suppose that for metal sheets of a particular type, its mean value and standard deviation are 70 GPa and 2.4 GPa, respectively. Suppose the distribution is normal. (Round your answers to four decimal places.] A USE SALT (a) Calculate P(69 sis 71) when n= 16. (b) How likely is it that the sample mean diameter exceeds 71 when n = 36?

Young's modulus is a quantitative measure of stiffness of an elastic material. Suppose that for metal sheets of a particular type, its mean value and standard deviation are 70 GPa and 2.4 GPa, respectively. Suppose the distribution is normal. (Round your answers to four decimal places.] A USE SALT (a) Calculate P(69 sis 71) when n= 16. (b) How likely is it that the sample mean diameter exceeds 71 when n = 36?

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

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Young's modulus is a quantitative measure of stiffness of an elastic material. Suppose that for metal sheets of a particular type, its mean value and standard deviation are 70 GPa and 2.4 GPa, respectively. Suppose the distribution is normal. (Round your answers to four decimal places.)
A USE SALT
(a) Calculate P(69 sīs 71) when n = 16.
(b) How likely is it that the sample mean diameter exceeds 71 when n = 36?
You may need to use the appropriate table in the Appendix of Tables to answer this question.

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