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: Out-of-state Plates 5 6 10 3 9 5 10 8 7 8 (a) (b) (c) (d) (e) Day 1 2 3 4 اه اما 5 6 7 8 9 10 Calculate the overall proportion of "tourists" (cars with out-of-state plates) and the 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?

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: Out-of-state Plates 5 6 10 3 9 5 10 8 7 8 (a) (b) (c) (d) (e) Day 1 2 3 4 اه اما 5 6 7 8 9 10 Calculate the overall proportion of "tourists" (cars with out-of-state plates) and the 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?

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

Section: Chapter Questions

Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...

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