Maurice Tutor

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    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 17 Jan 2018 My Price 5.00

set of final examination

A set of final examination grades in an introductory statistics course is normally distributed, with a mean of 73 and a standard deviation of 8.

a. What is the probability of getting a grade below 91 on this exam?

b. What is the probability that a student scored between 65 and 89?

c. The probability is 5% that a student taking the test scores higher than what grade?

d. If the professor grades on a curve (that is, gives As to the top 10% of the class, regardless of the score), are you better off with a grade of 81 on this exam or a grade of 68 on a different exam, where the mean is 62 and the standard deviation is 3? Show your answer statistically and explain.

 

Answers

Maurice Tutor
(5)
Status NEW Posted 17 Jan 2018 08:01 PM My Price 5.00

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