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Author Question: The following contingency table shows the number of two-bedroom apartments grouped by monthly rent ... (Read 581 times)

mpobi80

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on: Jun 24, 2018
The following contingency table shows the number of two-bedroom apartments grouped by monthly rent and location.
 
  Monthly Rent York Lancaster Dover
  600 to under 700 6 14 7
  700 to under 800 23 17 20
  800 to under 900 10 16 12
 
  The probability that a randomly selected apartment from this group was located in York or Lancaster is ________.
  A) 0.350
  B) 0.435
  C) 0.688
  D) 0.712

Question 2

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. The interval around the mean that contains 68 of the times needed to grade exams is ________.
 
  A) 12.1, 20.5
  B) 7.9, 24.7
  C) 5.8, 26.8
  D) 3.7, 28.9


emily12345

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

C

Answer to Question 2

A


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mpobi80

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Reply #2 on: Jun 24, 2018
Correct answers!


emily12345

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Reply #3 on: Jun 24, 2018
Great! Please up vote :D


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