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Author Question: Given that Z is a standard normal random variable, P(Z > 1.58) is: a. 0.4429 b. 0.0571 c. ... (Read 59 times)

arivle123

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on: Jul 24, 2018
Given that Z is a standard normal random variable, P(Z > 1.58) is:
 a. 0.4429
  b. 0.0571
  c. 0.9429
  d. 0.5571
  e. 0.6910

Question 2

After calculating the sample size needed to estimate a population proportion to within 0.04, your statistics professor told you the maximum allowable error must be reduced to just .01 . If the original calculation led to a sample size of 800, the sample size will now have to be:
 a. 800
  b. 3200
  c. 12,800
  d. 6400
  e. 1600


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bfulkerson77

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

C

Answer to Question 2

C


arivle123

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  • Posts: 569
Reply 2 on: Jul 24, 2018
Great answer, keep it coming :)

gcook

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Reply 3 on: Yesterday
Wow, this really help

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