Rivets A company that manufactures rivets believes theshear strength (in pounds) is modeled by N(800, 50).a) Draw and label the Normal model.b) Would it be safe to use these rivets in a situationrequiring a shear strength of 750 pounds? Explain.c) About what percent of these rivets would you expectto fall below 900 pounds? d) Rivets are used in a variety of applications with vary-ing shear strength requirements. What is the maximum shear strength for which you would feel comfort-able approving this company’s rivets? Explain your reasoning.

Rivets A company that manufactures rivets believes theshear strength (in pounds) is modeled by N(800, 50).a) Draw and label the Normal model.b) Would it be safe to use these rivets in a situationrequiring a shear strength of 750 pounds? Explain.c) About what percent of these rivets would you expectto fall below 900 pounds? d) Rivets are used in a variety of applications with vary-ing shear strength requirements. What is the maximum shear strength for which you would feel comfort-able approving this company’s rivets? Explain your reasoning.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter1: Variables, Expressions, And Integers

Section1.5: Adding Integers

Problem 45E

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A company that manufactures rivets believes the shear strength (in pounds) is modeled by N(750,30). Use the 68–95–99.7 Rule to complete parts a) through c) below. a) Draw and label the Normal model. b) Would it be safe to use these rivets in a situation requiring a shear strength of 720 pounds? Explain. Choose the correct answer below. A. No, because about 32% of all of this company's rivets have a shear strength of less than 720 pounds. B. Yes, because very nearly all of this company's rivets have a shear strength of more than 720 pounds. C. No, because about 16% of all of this company's rivets have a shear strength of less than 720 pounds. D. Yes, because only about 2.5% of all of this company's rivets have a shear strength of less than 720 pounds. c) About what percent of these rivets can be expected to fall below 810 pounds?
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