Q-1a. You run a call center and are concerned about customer support service levels …

  

Q-1a. You run a call center and are concerned about customer support 

service levels on the Help Desk. You want to know how many calls 

per day are handled by your help desk staff. You collect the data at

left over a 75-day period. Use appropriate descriptive statistics to 

make sense of this data. Use an appropriate graph also. Explain 

your findings so that your non-quantitative partner will understand

them. (5 pts.)

      Help Desk Calls   Day # Calls   1 45   2 30   3 53   4 69   5 67   6 45   7 17   8 46   9 32   10 33   11 59   12 74   13 42   14 35   15 38   16 18   17 41   18 63   19 72   20 43   21 45   22 44   23 48   24 48   25 67   26 72   27 41   28 52   29 75   30 40   31 34   32 40   33 88   34 63   35 38   36 48   37 45   38 50   39 150   40 84   41 28   42 37   43 52   44 44   45 49   46 70   47 75   48 58   49 23   50 62   51 10   52 71   53 80   54 70   55 41   56 47   57 99   58 38   59 29   60 83   61 60   62 54   63 35   64 46   65 51   66 58   67 72   68 86   69 48   70 48   71 51   72 62   73 62   74 85   75 150    

  

Can demographic information be helpful in predicting sales at sporting goods stores? The data at left are monthly sales totals from a random sample of 33 stores in a large chain of nationwide sporting goods stores. All stores in the franchise, and thus within the sample, are approximately the same size and carry the same merchandise. The county, or in some cases counties, in which the store draws the majority of its customers is referred to here as the customer base. For each of the 33 set are:

Sales ——Latest one month sales total (dollars)

Income —Median family income of customer base (dollars)

Age ——–Median age of customer base (years)

HS ———-Percentage of customer base with a high school diploma

College —Percentage of customer base with a college diploma

Growth —Annual population growth rate of customer base over the past 10 years.

______________________________________________________________________________________

_

Q-2a. Construct a scatter plot, using sales as the dependent variable and median family income as the 

independent variable. Discuss the scatter plot. (5 pts.)

______________________________________________________________________________________

Q-2b. Assuming a linear relationship, use the least-squares method to compute the regression coefficients 

b0and b1 and state the regression equation. (5 pts.)

______________________________________________________________________________________

Q-2c. Interpret the meaning of the Y-intercept, b0, and the slope, b1, in this problem. (5 pts.)

______________________________________________________________________________________

Q-2d. Compute the coefficient of determination r2, and interpret its meaning. (5 pts.)

______________________________________________________________________________________

Q-2e. Construct a 95% confidence interval estimate of the population slope and interpret its meaning. ( 5 pts.)

          Sales   ($) Age Growth Income ($) HS College   1695712.62 33.16 0.8299 26748.51 73.59 17.8350   3403862.05 32.67 0.6619 53063.79 88.46 31.9439   2710352.91 35.66 0.9688 36090.14 73.54 18.6198   529215.46 33.07 0.0821 32058.07 79.18 20.6284   663686.65 35.76 0.4646 47843.42 84.18 35.2032   2546324.34 33.81 2.1796 50180.97 93.50 41.7057   2787046.2 30.98 1.8048 30710.08 78.02 28.0250   612696.05 30.78 -0.0569 29141.7 70.29 15.0882   891822.03 32.32 -0.1577 55980.15 70.67 10.9829   1124967.97 32.53 0.3664 28730.88 63.74 13.2458   909500.98 31.44 2.2256 31109.23 76.91 19.5500   2631166.88 33.16 1.5158 55614.12 82.95 20.8135   882972.65 31.87 0.1413 23038.43 65.21 16.9796   1078573.12 33.41 -1.0400 34531.72 73.49 32.9920   844320.19 34.05 1.6836 30350.36 80.22 22.3185   1849119.03 28.89 2.3596 38964.94 87.60 24.5670   3860007.32 36.11 0.7840 49392.77 85.30 30.8790   826573.88 32.81 0.1164 25595.69 65.59 17.4545   604682.87 33.05 1.1498 29622.61 80.62 18.6356   1903611.6 33.50 0.0606 31586.1 80.38 38.3249   2356808.39 32.68 1.6338 49674.56 79.85 23.7780   2788571.96 28.52 1.1256 28878.98 81.24 16.9300   1634878.29 32.89 1.4884 24287.08 70.22 19.1429   2371627.37 30.50 4.7937 46711.24 87.10 30.8843   2627837.96 30.29 1.8922 43449.81 80.21 26.5570   1868116.33 31.29 1.8667 31694.45 75.29 28.3600   2236796.86 33.05 1.7896 45459.22 77.62 19.2490   1318876.23 32.93 0.2707 47047.34 85.18 35.4994   1868097.84 31.84 3.0129 26433.24 74.18 18.6375   1695218.57 31.08 3.4630 33396.66 81.70 41.1130   2700194.42 32.18 0.7041 26179.36 73.41 17.8566   1156049.77 31.69 -0.1569 33454.64 73.72 26.5426   643858.44 34.03 0.7084 42271.5 78.65 29.8734    

Paper Assignments
Calculate your paper price
Pages (550 words)
Approximate price: -

Why Work with Us

Top Quality and Well-Researched Papers

We always make sure that writers follow all your instructions precisely. You can choose your academic level: high school, college/university or professional, and we will assign a writer who has a respective degree.

Professional and Experienced Academic Writers

We have a team of professional writers with experience in academic and business writing. Many are native speakers and able to perform any task for which you need help.

Free Unlimited Revisions

If you think we missed something, send your order for a free revision. You have 10 days to submit the order for review after you have received the final document. You can do this yourself after logging into your personal account or by contacting our support.

Prompt Delivery and 100% Money-Back-Guarantee

All papers are always delivered on time. In case we need more time to master your paper, we may contact you regarding the deadline extension. In case you cannot provide us with more time, a 100% refund is guaranteed.

Original & Confidential

We use several writing tools checks to ensure that all documents you receive are free from plagiarism. Our editors carefully review all quotations in the text. We also promise maximum confidentiality in all of our services.

24/7 Customer Support

Our support agents are available 24 hours a day 7 days a week and committed to providing you with the best customer experience. Get in touch whenever you need any assistance.

Try it now!

Calculate the price of your order

Total price:
$0.00

How it works?

Follow these simple steps to get your paper done

Place your order

Fill in the order form and provide all details of your assignment.

Proceed with the payment

Choose the payment system that suits you most.

Receive the final file

Once your paper is ready, we will email it to you.

Our Services

No need to work on your paper at night. Sleep tight, we will cover your back. We offer all kinds of writing services.

Essays

Essay Writing Service

No matter what kind of academic paper you need and how urgent you need it, you are welcome to choose your academic level and the type of your paper at an affordable price. We take care of all your paper needs and give a 24/7 customer care support system.

Admissions

Admission Essays & Business Writing Help

An admission essay is an essay or other written statement by a candidate, often a potential student enrolling in a college, university, or graduate school. You can be rest assurred that through our service we will write the best admission essay for you.

Reviews

Editing Support

Our academic writers and editors make the necessary changes to your paper so that it is polished. We also format your document by correctly quoting the sources and creating reference lists in the formats APA, Harvard, MLA, Chicago / Turabian.

Reviews

Revision Support

If you think your paper could be improved, you can request a review. In this case, your paper will be checked by the writer or assigned to an editor. You can use this option as many times as you see fit. This is free because we want you to be completely satisfied with the service offered.