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Author Question: About 95.4 of the values of a normal random variable are within approximately how many standard ... (Read 80 times)

809779

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on: Jun 24, 2018
About 95.4 of the values of a normal random variable are within approximately how many standard deviations of its mean?
 a. 1.7
  b. 2
  c. 2.5
  d. 3

Question 2

We can use the normal distribution to make confidence interval estimates for the population proportion, p, when _____.
 a. np  5
  b. n(1  p)  5
  c. p has a normal distribution
  d. np  5 and n(1  p)  5


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KKcool

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Reply #1 on: Jun 24, 2018
Answer to Question 1

b

Answer to Question 2

d


809779

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Reply 2 on: Jun 24, 2018
Thanks for the timely response, appreciate it

bitingbit

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Reply 3 on: Yesterday
Wow, this really help

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