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Author Question: The dollar value of orders placed through a particular store catalog is found to be normally ... (Read 51 times)

darbym82

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on: Jun 24, 2018
The dollar value of orders placed through a particular store catalog is found to be normally distributed with a standard deviation of 21.58. A sample of 30 orders averaged 81.25. What is the 90 confidence interval around this sample mean?
 
  A) 81.25  21.58
  B) 81.25  10.79
  C) 81.25  12.15
  D) 81.25  6.48

Question 2

What is the probability that in a particular month the office receives more than 310 orders?
 
  A) 0.7823
  B) 0.2826
  C) 0.7174
  D) 0.2177


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sarahccccc

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

D

Answer to Question 2

D


darbym82

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Reply 2 on: Jun 24, 2018
YES! Correct, THANKS for helping me on my review

vickyvicksss

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

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