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Math SAT scores are known to be normally distributed with mean of 500 and standard deviation of...

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Question

Statistics

Math SAT scores are known to be normally distributedwith mean of
500 and standard deviation of 100. Answer the following questions.(I also want to see
good notation and some of your calculations.)
a) Suppose we randomly select one person who has taken the SAT.What is the
probability their math score is between 525 and 550?
b) Suppose we randomly select 25 people who have taken the SAT.What is the
probability their average math score is between 525 and 550?

Answer & Explanation Solved by verified expert
3.9 Ratings (462 Votes)
a 500 100To find P525 X 550For X 525Z 525 500100 025By Technology Cumulative Area Under Standard    See Answer
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