i need heelp plzzzzzz!!! e a secure https //www.mathxt.com/Student/PlayerHomewor

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i need heelp plzzzzzz!!!

e a secure https //www.mathxt.com/Student/PlayerHomeworkiaspx?homeworkldi 4090475438aquestionid 58 flushedi falsesc di 4112700 2017 Spring MATH2600 -OL Homework: Quiz 4 Chapter 4 Normal Distribution (Paik's n Score: 1.33 of 2 pts 3 of 7 (7 complete) v 5.1.36 A company that manufactures rivets believes the shear strength in pounds) use tocomplete parts a) trough c) below is modeled by No800.40) the 68 e5 7Ruo 700 H00 840 b) Would it be safe to use these rivets in a situation requiring a shear strength of 760 pounds? Explain Choose the correct answer below. A No, bocause about 32% of all of this companys rivets have a shear strength of less than 760 pounds B Yes, because only about 25% of all of this company's rivets have a shear strength ofless than T60 pounds C Yes, because very nearly all of this company's rivets have a shear sbength of more than 760 pounds p No, because about 16% of all of this companys rivets have a shear strongth of loss than 760 pounds c) About what percent of these nvets can be expected to fall below 880 pounds? pa an integer or a decimal) Enter your answer in the answer box and then click Check Answer All showing parts score: 73

Explanation / Answer

mean=39.2 and sd=1.9

P(x<35) =P(z<(35-39.2)/1.9) =P(z<-2.21) or 1-P(z<2.21

From normal distribution table this gives 1-0.9864=0.0136

or 1.36%

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