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Author Question: The diameters of bolts produced by a certain machine are normally distributed with a mean of 0.30 ... (Read 115 times)

nmorano1

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on: Jul 25, 2018
The diameters of bolts produced by a certain machine are normally distributed with a mean of 0.30 inches and a standard deviation of 0.01 inches. What percentage of bolts will have a diameter greater than 0.32 inches?
 
  A) 47.72 B) 97.72 C) 2.28 D) 37.45

Question 2

The variable X is normally distributed.The mean is  = 22.0 and the standard deviation is  = 2.4.
  Find P(19.7 < X < 25.3).
 
  A) 1.0847 B) 0.3370 C) 0.7477 D) 0.4107


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smrtceo

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

C

Answer to Question 2

C


nmorano1

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Reply 2 on: Jul 25, 2018
Great answer, keep it coming :)

bblaney

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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