three stats questions
Question # 00230226
Posted By:
Updated on: 03/23/2016 12:53 PM Due on: 03/31/2016
Shelf Space Sales Aisle Location
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12.4 The marketing manager of a large supermarket
chain has the business objective of using
shelf space most efficiently. Toward that goal, she would
like to use shelf space to predict the sales of pet food. Data
is collected from a random sample of 12 equal-sized stores,
with the following results (stored in Petfood ):
a. Construct a scatter plot.
For these data, and b0 = 145 and b1= 7.4
b. Interpret the meaning of the slope, b1 in this problem.
c. Predict the weekly sales of pet food for stores with 8 feet of shelf space for pet food.
Q2
Circulation is the lifeblood of the publishing business. The larger the sales of a magazine, the more it can charge advertisers. Recently, a circulation gap has appeared between the publishers’ reports of magazines’ newsstand sales and subsequent audits by the Audit Bureau of Circulations. The data in the file represent the reported and audited newsstand yearly sales (in thousands) for the following 10 magazines:
Magazine Reported (X) Audited (Y)
YM 621.0 299.6
Cosmo Girl 359.7 207.7
Rosie 530.0 325.0
Playboy 492.1 336.3
Esquire 70.5 48.6
Teen People 567.0 400.3
More 125.5 91.2
Spin 50.6 39.1
Vogue 353.3 268.6
Elle 262.6 214.3
a. Construct a scatter plot. For these data, b0 = 26.724 and b1 = 0.5719.
b. Interpret the meaning of the slope, b1, in this problem.
c. Predict the audited newsstand sales for a magazine that reports newsstand sales of 400,000.
Q3
The owner of an intra -city moving company typically has his most experienced manager predict the total number of labor hours that will be required to complete an upcoming move. This approach had proved useful in the past, but he would like to be able to develop a more accurate method of predicting the labor hours by using the amount of cubic feet moved. In a preliminary effort to provide a more accurate method, he has collected data for 36 moves, in which the travel time was an insignificant portion of the labor hours worked.
The data are in the Excel file, MOVING.xls downloadable from File or click Companion Website at www.peasronhighered.com/levine, and go to the Excel Date Files link.
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5
5
10
10
10
15
15
15
20
20
20
160
220
140
190
240
260
230
270
280
260
290
310
0
1
0
0
0
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0
0
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0
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1
12.4 The marketing manager of a large supermarket
chain has the business objective of using
shelf space most efficiently. Toward that goal, she would
like to use shelf space to predict the sales of pet food. Data
is collected from a random sample of 12 equal-sized stores,
with the following results (stored in Petfood ):
a. Construct a scatter plot.
For these data, and b0 = 145 and b1= 7.4
b. Interpret the meaning of the slope, b1 in this problem.
c. Predict the weekly sales of pet food for stores with 8 feet of shelf space for pet food.
Q2
Circulation is the lifeblood of the publishing business. The larger the sales of a magazine, the more it can charge advertisers. Recently, a circulation gap has appeared between the publishers’ reports of magazines’ newsstand sales and subsequent audits by the Audit Bureau of Circulations. The data in the file represent the reported and audited newsstand yearly sales (in thousands) for the following 10 magazines:
Magazine Reported (X) Audited (Y)
YM 621.0 299.6
Cosmo Girl 359.7 207.7
Rosie 530.0 325.0
Playboy 492.1 336.3
Esquire 70.5 48.6
Teen People 567.0 400.3
More 125.5 91.2
Spin 50.6 39.1
Vogue 353.3 268.6
Elle 262.6 214.3
a. Construct a scatter plot. For these data, b0 = 26.724 and b1 = 0.5719.
b. Interpret the meaning of the slope, b1, in this problem.
c. Predict the audited newsstand sales for a magazine that reports newsstand sales of 400,000.
Q3
The owner of an intra -city moving company typically has his most experienced manager predict the total number of labor hours that will be required to complete an upcoming move. This approach had proved useful in the past, but he would like to be able to develop a more accurate method of predicting the labor hours by using the amount of cubic feet moved. In a preliminary effort to provide a more accurate method, he has collected data for 36 moves, in which the travel time was an insignificant portion of the labor hours worked.
The data are in the Excel file, MOVING.xls downloadable from File or click Companion Website at www.peasronhighered.com/levine, and go to the Excel Date Files link.
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Rating:
/5
Solution: three stats questions