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Author Question: A small, independent amusement park collects data on the number of cars with out-of-state license ... (Read 255 times)

Pineapplelove6

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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:

DayOut-of-state Plates
16
24
35
47
58
63
74
85
93
1011

(a) Calculate the overall proportion of "tourists" (cars with out-of-state plates) and the standard deviation of proportions.
(b) Using ± 3σ limits, calculate the LCL and UCL for these data.
(c) Is the process under control? Explain.


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Marked as best answer by Pineapplelove6 on Dec 3, 2019

blakeserpa

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