Given that Z is a standard normal random variable, P(Z > 1.58) ...

[arivle123]

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

[bfulkerson77]

Answer to Question 1

C

Answer to Question 2

C

[arivle123]

YES! Correct, THANKS for helping me on my review

[aliotak]

Thanks for the timely response, appreciate it