A retail chain is considering installing de-vices that resemble cameras to deter shoplifting. The devices only look
Question:
(a) Why is it important that all of the stores measure theft during the same time period?
(b) Compute separate 95% confidence intervals for the amount lost to theft with and without the decoy cameras. Is there evidence of a statistically significant difference?
(c) Perform the appropriate comparison of the decoy system versus stores without this potential deter-rent. Is there a statistically significant difference in the average amount lost to theft? Be sure to check the conditions for the method used.
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Related Book For
Statistics For Business Decision Making And Analysis
ISBN: 9780321890269
2nd Edition
Authors: Robert Stine, Dean Foster
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