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Author Question: For a standard normal curve, find the z-score that separates the bottom 70 from the top 30. A) ... (Read 58 times)

tichca

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on: Jul 25, 2018
For a standard normal curve, find the z-score that separates the bottom 70 from the top 30.
 
  A) 0.12 B) 0.98 C) 0.47 D) 0.53

Question 2

Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. A vending machine will only accept coins weighing between 5.48 g and 5.82 g. What percentage of legal quarters will be rejected?
 
  A) 2.48 B) 1.96 C) 0.0196 D) 1.62


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mochi09

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

D

Answer to Question 2

B


tichca

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Reply 2 on: Jul 25, 2018
Excellent

chereeb

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Reply 3 on: Yesterday
Gracias!

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