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Vandana Vandana
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6 years ago
Dempsey's Garage repairs domestic and import cars. The following table shows the number of cars that have been serviced by age and type during the last month.
 
  Age Domestic Import
  0 to under 5 years old 8 6
  5 to under 10 years old 22 12
  10 to under 15 years old 12 20
 
  The probability that a randomly selected car from this group was a domestic car or from 0 to under 5 years old is ________.
  A) 0.10
  B) 0.19
  C) 0.60
  D) 0.80

Q. 2

According to LIMRA, 77 of husband-wife families with kids under 18 years old have life insurance. A random sample of six husband-wife families was selected. What is the probability that five or more families have life insurance?
 
  A) 0.3667
  B) 0.4025
  C) 0.5820
  D) 0.6621

Q. 3

Failing to reject the null hypothesis and accepting the null hypothesis do not refer to the same conclusion.
 
  Indicate whether the statement is true or false

Q. 4

The time for a professor to grade an exam is normally distributed with a mean of 16.3 minutes and a standard deviation of 4.2 minutes. What is the probability that a randomly selected exam will require more than 15 minutes to grade?
 
  A) 0.3783
  B) 0.4548
  C) 0.5664
  D) 0.6217
Textbook 
Business Statistics

Business Statistics


Edition: 2nd
Author:
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hanndail22hanndail22
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6 years ago
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6 years ago
Such a godsend, you helped me and my friend big time
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4 years ago
Thank you
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3 years ago
thank you
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3 years ago
thank you
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3 years ago
Very helpful
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3 years ago
thanks
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