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Author Question: Assume that z scores are normally distributed with a mean of 0 and a standard deviation of 1. If ... (Read 60 times)

misspop

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on: Jul 25, 2018
Assume that z scores are normally distributed with a mean of 0 and a standard deviation of 1. If
  P(-a < z < a) = 0.4314, find a.
 
  A) -0.18 B) 0.3328 C) 0.57 D) 1.49

Question 2

In a certain college, 33 of the physics majors belong to ethnic minorities. If 10 students are
  selected at random from the physics majors, that is the probability that no more than 6 belong to
  an ethnic minority?
 
  A) 0.982 B) 0.913 C) 0.055 D) 0.985


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daiying98

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Reply #1 on: Jul 25, 2018
Answer to Question 1

C

Answer to Question 2

A


misspop

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Reply 2 on: Jul 25, 2018
Thanks for the timely response, appreciate it

nanny

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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