Question

The London School of Economics and the Harvard Business School have conducted studies of how chief...

The London School of Economics and the Harvard Business School have conducted studies of how chief executive officers (CEOs) spend their time. These studies have found that CEOs spend many hours per week in meetings that include conference calls, business meals, and public events. Suppose that the data below show the time spent per week in meetings (hours) for a sample of 25 CEOs.

14 15 18 23 15
19 20 13 15 23
23 21 15 20 21
16 15 18 18 19
19 22 23 21 12

(a)

What is the least amount of time spent per week on meetings?

h

What is the highest amount of time spent per week on meetings?

h

(b)

Use a class width of two hours to prepare a frequency distribution and a percent frequency distribution for the data.

Hours in
Meetings
per Week
Frequency Percent
Frequency
11–12
13–14
15–16
17–18
19–20
21–22
23–24
Total

(c)

Prepare a histogram.

A histogram with 7 bars is given. The horizontal axis is labeled: Hours per Week in Meetings. The vertical axis is labeled: Frequency.

  • The leftmost bar is over the label 11-12, and is 1 unit tall.
  • Moving to the right, the second bar is over the label 13-14 and is 4 units tall.
  • The third bar is centered over the label 15-16 and is 3 units tall.
  • The forth bar is centered over the label 17-18 and is 6 units tall.
  • The fifth bar is centered over the label 19-20 and is 5 units tall.
  • The sixth bar is centered over the label 21-22 and is 4 units tall.
  • The seventh and rightmost bar is centered over the label 23-24 and is 2 units tall.

A histogram with 7 bars is given. The horizontal axis is labeled: Hours per Week in Meetings. The vertical axis is labeled: Frequency.

  • The leftmost bar is over the label 11-12, and is 1 unit tall.
  • Moving to the right, the second bar is over the label 13-14 and is 2 units tall.
  • The third bar is centered over the label 15-16 and is 6 units tall.
  • The forth bar is centered over the label 17-18 and is 3 units tall.
  • The fifth bar is centered over the label 19-20 and is 5 units tall.
  • The sixth bar is centered over the label 21-22 and is 4 units tall.
  • The seventh and rightmost bar is centered over the label 23-24 and is 4 units tall.

A histogram with 7 bars is given. The horizontal axis is labeled: Hours per Week in Meetings. The vertical axis is labeled: Frequency.

  • The leftmost bar is over the label 11-12, and is 6 units tall.
  • Moving to the right, the second bar is over the label 13-14 and is 3 units tall.
  • The third bar is centered over the label 15-16 and is 2 units tall.
  • The forth bar is centered over the label 17-18 and is 1 unit tall.
  • The fifth bar is centered over the label 19-20 and is 4 units tall.
  • The sixth bar is centered over the label 21-22 and is 4 units tall.
  • The seventh and rightmost bar is centered over the label 23-24 and is 5 units tall.

A histogram with 7 bars is given. The horizontal axis is labeled: Hours per Week in Meetings. The vertical axis is labeled: Frequency.

  • The leftmost bar is over the label 11-12, and is 4 units tall.
  • Moving to the right, the second bar is over the label 13-14 and is 4 units tall.
  • The third bar is centered over the label 15-16 and is 5 units tall.
  • The forth bar is centered over the label 17-18 and is 3 units tall.
  • The fifth bar is centered over the label 19-20 and is 6 units tall.
  • The sixth bar is centered over the label 21-22 and is 2 units tall.
  • The seventh and rightmost bar is centered over the label 23-24 and is 1 unit tall.

Comment on the shape of the distribution.

The distribution is  ---Select--- symmetric slightly skewed to the right slightly skewed to the left .

Homework Answers

Answer #1

Answer:

a)

b)

c)

The distribution is slightly skewed to left

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