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Author Question: When the level of confidence increases, the confidence interval _____. a. stays the same b. ... (Read 78 times)

NguyenJ

  • Hero Member
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  • Posts: 516
on: Jun 24, 2018
When the level of confidence increases, the confidence interval _____.
 a. stays the same
  b. becomes wider
  c. becomes narrower
  d. cannot be determined from the information given

Question 2

The weight of items produced by a machine is normally distributed with a mean of 8 ounces and a standard deviation of 2 ounces. What percentage of items will weigh between 6.4 and 8.9 ounces?
 a. .1145
  b. .2881
  c. .1736
  d. .4617


kaykay69

  • Sr. Member
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  • Posts: 322
Reply #1 on: Jun 24, 2018
Answer to Question 1

b

Answer to Question 2

d


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