5.17 The number of breakdowns for a university computer system is closely monitored by the director of
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5.17 The number of breakdowns for a university computer system is closely monitored by the director of the computing center, because it is critical to the efficient operation of the center. The number averages 4 per week, with a standard deviation of 0.8 per week.
a Find an interval that must include at least 90% of the weekly figures on number of breakdowns.
b The center director promises that the number of breakdowns will rarely exceed 8 in a oneweek period. Is the director safe in making this claim? Why or why not?
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Kirti Kaushal
Having experience of more than 10 years is good enough to coach my students. Currently, I am working as an active supervisor of ACCA students. In my career, I helped students in financial accounting, management accounting, cost accounting, financial reporting, taxation, and audit. I also helped students publish their articles or papers in good journals. I also helped students with thesis and objective writing.
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Related Book For 
Probability And Statistics For Engineers
ISBN: 9781133006909
5th Edition
Authors: Richard L Scheaffer, Madhuri Mulekar, James T McClave, Cecie Starr
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