suppose you wantedto be inthe top 9 of your class From past

suppose you wantedto be inthe top 9% of your class. From past experience your instructor is able to estimate the mean average will be 83 and the standard deviation will be 4. What will be the minimum average needed to be in the top 9% of your class? (4 points) Please answer in a complete sentence. 3, 4. According to the June 2004 Readers Digest article \"Only in America.\" The average amountthat a 17-year old spends on his or her high school prom is $638.Assume thatthe amounts are normally distributed with a standard deviation of $75.(6) a. Find the probability if we randomly choose one 17-year old, he or she will spend less than $500 on his or her high school prom. Write your answer in a complete sentence p. A sample of 36 randomly chosen 17-year olds is selected. Find the probability that the sample mean will be more than $600. Write your answer in a complete sentence

Solution

So for top 9% min marks = 88.36

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Prob =0.00

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a) it is left skewed

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b) Cannot find as for exact less than 77 we do not know

c) 10+14=24

d) 14+8=22

1) Top 91%	z	1.34
	x	88.36