Bell_Ringer_Will_Marty_Make_it_Back_to_the_Future 2

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Florida International University *

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2122

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Mathematics

Date

Jan 9, 2024

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Uploaded by KidProton11981

Will Marty Make it Back to the Future? Part 2  After accelerating for 20 seconds, a DeLorean sports car has a wide range of speeds that it can achieve, depending on traction. The distribution of speed follows an approximately normal distribution with a mean of 80 mph and a standard deviation of 7.7 mph.  Show your work!!!  What percent of the runs will be less than 70 mph?  Picture: Use this equation to solve. o  Answer:___9.8_  Marty wants his last run to be at the 85 th percentile of all the possible speeds. What speed is needed to be at the 85 th percentile?  Picture: Use this equation to solve. o  Answer:______  Marty is also considering using a Honda CRX. He knows the CRX has a mean speed of 74 mph and the 80 th percentile is 88 mph. Find its standard deviation.  Picture: Use this equation to solve. o

 Answer:_16.7

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Bell_Ringer_Will_Marty_Make_it_Back_to_the_Future 2

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