(Steps Shown) The Evans Department Store has experienced a 4.5 % rate of customer complaints and attempts to lower this rate with an employee retraining
Question: The Evans Department Store has experienced a 4.5 % rate of customer complaints and attempts to lower this rate with an employee retraining program. After the program 850 customers are observed.
- Assuming that the retraining program has no effect, find the mean and standard deviation and interpret the meaning of the 95 % interval in terms of this problem. Use Binomial Shaft cut formulas.
- In the observed group of 850 customers, 45 complain. Is this result unusual? Does it seem that retraining was effective?
Deliverable: Word Document 
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