Statistical Techniques in Business and Economics
Statistical Techniques in Business and Economics
18th Edition
ISBN: 9781260579611
Author: Douglas Lind; William Marchal; Samuel Wathen
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 4, Problem 1P

The duration in minutes of a sample of 50 power outages last year in the state of South Carolina is listed below.

Chapter 4, Problem 1P, The duration in minutes of a sample of 50 power outages last year in the state of South Carolina is

Use a statistical software package such as Excel or Minitab to help answer the following questions.

  1. a. Determine the mean, median, and standard deviation.
  2. b. Determine the first and third quartiles.
  3. c. Develop a box plot. Are there any outliers? Do the amounts follow a symmetric distribution or are they skewed? Justify your answer.
  4. d. Organize the distribution of funds into a frequency distribution.
  5. e. Write a brief summary of the results in parts a to d.
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Draw a picture of a normal distribution with mean 70 and standard deviation 5.
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Statistical Techniques in Business and Economics

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