. Department of Security UUM decides to do a yearly review of the students’ complaints  on parking violations. If the total number of complaints in each of the 12 months were  15, 18, 13, 12, 16, 20, 5, 10, 9, 11, 8, and 3, and the police chief wants a 90%  confidence level, are the complaints in control? a. Find the UCL and LCL. b. In control or not? c. Make TWO (2) recommendations to solve those compl

College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter8: Sequences, Series, And Probability
Section8.7: Probability
Problem 6E: List the sample space of each experiment. Tossing three coins
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1. Department of Security UUM decides to do a yearly review of the students’ complaints 
on parking violations. If the total number of complaints in each of the 12 months were 
15, 18, 13, 12, 16, 20, 5, 10, 9, 11, 8, and 3, and the police chief wants a 90% 
confidence level, are the complaints in control?
a. Find the UCL and LCL.
b. In control or not?
c. Make TWO (2) recommendations to solve those complaints.

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