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This question was created from STAT 200_Final_Exam_Spring_2019_OL1.pdf

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This question was created from STAT 200_Final_Exam_Spring_2019_OL1.pdf
https://www.coursehero.com/file/38748661/STAT-200-Final-Exam-Spring-2019-OL1pdf/

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1}. Assume that gas mileage for cars is normally distributed with a meal of 23. 5 miles per
callon and a standard deviation of 10 miles per gallon . Show all work. Just the answer .
without supporting work, will receive no credit .
( a ) What is the probability that a randomly selected car gets between 15 and 30 miles per gallon ?
( Found the answer to 4 decimal places ;
( 6 ) Find the 75% percentile of the gas mileage distribution . ( Found the answer to ?’ decimal places )*
14. Based on the performance of all individuals who tested between 2015 and 2017. the GN[AT total
Scores are normally distributed with a mean of 5 51. 37 and a standard deviation of 1 19.31 .
( https / www . Imac. com ‘s mat – other – assessments / accessing – {mat -exam – scores – and – reports ‘smat –
`Ofing – by – exam – section – normal – view #tab 5 1. Show all work. Just the answer , Without supporting
Work, will receive no credit
( a) For a sample of size 100. state the standard deviation of the sample mean ( the " standard Error
of the mean " ). ( Round Your answer to three decimal places )
I bj Suppose a sample of size 100 is taken . Find the probability that the sample mean GNVLAT total
scores Is more than 5 75. ( Round Your answer to three decimal places"!

 
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