(a) and the Calculate the overall proportion of "tourists" (cars with out-of-state plates) standard deviation of proportions. Using a 95.45% confidence, calculate the LCL and UCL for these data. Draw the control chart? Is the process under control? Explain why. What type of variation is present? (b) (c) (d) (e)

Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter14: Data Mining
Section14.2: Classification Methods
Problem 11P
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1. A small, independent amusement park collects data on the number of cars with
out-of-state license plates. The sample size is fixed at n=25 each day. Data from the
previous 10 days indicate the following number of out-of-state license plates:
Day
1
2
3
4
5
6
7
8
9
10
(a)
and the
(b)
(d)
(e)
Out-of-state
Plates
5
6
10
3
9
5
10
8
7
8
Calculate the overall proportion of "tourists" (cars with out-of-state plates)
standard deviation of proportions.
Using a 95.45% confidence, calculate the LCL and UCL for these data.
Draw the control chart?
Is the process under control? Explain why.
What type of variation is present?
Transcribed Image Text:1. A small, independent amusement park collects data on the number of cars with out-of-state license plates. The sample size is fixed at n=25 each day. Data from the previous 10 days indicate the following number of out-of-state license plates: Day 1 2 3 4 5 6 7 8 9 10 (a) and the (b) (d) (e) Out-of-state Plates 5 6 10 3 9 5 10 8 7 8 Calculate the overall proportion of "tourists" (cars with out-of-state plates) standard deviation of proportions. Using a 95.45% confidence, calculate the LCL and UCL for these data. Draw the control chart? Is the process under control? Explain why. What type of variation is present?
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