# A product manager has conducted a customer

Question # 00624107 Posted By: shortone Updated on: 12/03/2017 09:38 PM Due on: 12/04/2017
Subject Computer Science Topic Algorithms Tutorials:
Question

1.) A product manager has conducted a customer satisfaction survey of

30 customers on a scale of 1 to 5. The survey data is shown below. Calculate the mean and standard deviation of the survey and plot a histogram of the data. Does the distribution approximate Normal?

 Customer Satisfaction rating 1 4 2 3 3 2 4 5 5 5 6 2 7 1 8 4 9 3 10 4 11 4 12 5 13 3 14 3 15 2 16 1 17 5 18 3 19 4 20 3 21 4 22 2 23 4 24 4 25 3 26 3 27 3 28 2 29 2 30 3

2.) A customer relationship manager decided to track customer complaints as part of his ongoing customer satisfaction improvement program. After collecting data for two months, their check sheet appears as follows:

 Type of Problem Frequency (number of times) Call went to voice mail 8 Items damaged when received 21 Literature not in the box 9 Parts missing 13 Unit not working 2 Delivery was late 3

Construct a Pareto chart including the cumulative % frequency. What is the cumulative percentage of the two leftmost bars?

3.) A quality control engineer monitors the quality of a cylinder production line. He regularly selects a sample of 5 units and measures the diameters. The specification requires the diameter to be 6 inches plus/minus 0.1 inch. The following is a record of the measurements. Is the production process in control? Please use X bar and R charts to make an assessment.

 Sample item 1 item 2 item 3 item 4 item 5 1 6.10 6.15 5.35 5.98 5.95 2 6.35 6.02 6.20 6.10 5.70 3 5.85 5.90 6.20 6.12 6.08 4 6.00 5.80 5.70 6.04 6.17 5 6.15 5.60 6.25 5.99 6.01 6 6.13 6.05 5.89 6.00 5.87 7 5.88 6.03 5.76 6.1 3 6.00 8 6.12 5.45 6.15 6.04 5.91

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1. ## Solution: A product manager has conducted a customer

Tutorial # 00622811 Posted By: shortone Posted on: 12/03/2017 09:38 PM
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