#14 Control Charts: Yellowstone National Park Yellowstone Park Medical Services provides emergency health care for park visitors. The average number of visitors treated is 21.7 per day during the summer period. The estimated standard deviation is 4.2 visitors. a. For a 10-day summer period, the following data show the number of visitors treated each day. Day 1 2 3 4 5 6 7 8 9 10 # 25 19 17 15 20 24 30 19 16 23 Make a control chart for the daily number of visitors treated and plot the data on the control chart. Does the data indicate that the number visitors treated is "in Control"? b. For another 10-day summer period, the following data saw obtained. Day 1 2 3 4 5 6 7 8 # 20 15 12 21 24 28 32 36 96 35 10 37 17 Make a control chart for the daily number of visitors treated and plot the data on the control chart. Does the data indicate that the number visitors treated is "in Control"?
#14 Control Charts: Yellowstone National Park Yellowstone Park Medical Services provides emergency health care for park visitors. The average number of visitors treated is 21.7 per day during the summer period. The estimated standard deviation is 4.2 visitors. a. For a 10-day summer period, the following data show the number of visitors treated each day. Day 1 2 3 4 5 6 7 8 9 10 # 25 19 17 15 20 24 30 19 16 23 Make a control chart for the daily number of visitors treated and plot the data on the control chart. Does the data indicate that the number visitors treated is "in Control"? b. For another 10-day summer period, the following data saw obtained. Day 1 2 3 4 5 6 7 8 # 20 15 12 21 24 28 32 36 96 35 10 37 17 Make a control chart for the daily number of visitors treated and plot the data on the control chart. Does the data indicate that the number visitors treated is "in Control"?
Chapter1: Making Economics Decisions
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Transcribed Image Text:#14 Control Charts: Yellowstone National Park
Yellowstone Park Medical Services provides emergency health care for park visitors. The
average number of visitors treated is 21.7 per day during the summer period. The estimated
standard deviation is 4.2 visitors.
a. For a 10-day summer period, the following data show the number of visitors treated each
day.
Day
1
2
3
4
5
6
7
8
9
10
#
25
19
17
15
20
24
30
19
16
23
Make a control chart for the daily number of visitors treated and plot the data on the control
chart. Does the data indicate that the number visitors treated is "in Control"?
b. For another 10-day summer period, the following data saw obtained.
Day
1
2
3
4
5
6
7
8
#
20
15
12
21
24
28
32
36
96
35
10
37
17
Make a control chart for the daily number of visitors treated and plot the data on the control
chart. Does the data indicate that the number visitors treated is "in Control"?
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