Statistical Techniques in Business & Economics Connect Access Code
17th Edition
ISBN: 9781259924071
Author: Douglas Lind, William Marchal, Samuel Wathen
Publisher: Mcgraw-Hill
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Chapter 11, Problem 31CE
To determine
Check whether there is a difference in the mean amounts purchased on impulse at the two stores.
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The New York Times reported that Apple has unveiled a new iPad marketed specifically to school districts for use by students (The New York Times website). The -inch iPads will have faster processors and a cheaper price point in an effort to take market share away from Google Chromebooks in public school districts. Suppose that the following data represent the percentages of students currently using Apple iPads for a sample of U.S. public school districts.
Click on the datafile logo to reference the data.
15
22
12
21
26
18
42
29
64
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15
22
18
24
27
24
26
19
a. Compute the mean and median percentage of students currently using Apple iPads.
Mean
(to decimals)
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(to the nearest whole number)
b. Compute the first and third quartiles for these data.
First quartile
(to decimals)
Third quartile
(to decimals)
c. Compute the range and interquartile range for these data.
Range
(to the nearest whole number)
Interquartile range
(to decimals)
d.…
Dr. Loras Tyrell was curious to see if his students actually saved money by purchasing books from sources other than the college bookstore. He administered a survey to all his students asking how they obtained their book (Bookstore, Rented, ebook, or on the web – WebBooks) and how much they paid for the book. He obtained the information below.
If the values are normally distributed, we know that of the students who purchased the eBook, about 95.4% of those students paid approximately $----- to ----?
The New York Times reported that Apple has unveiled a new iPad marketed specifically to school districts for use by students (The New York Times website).
The 9.7-inch iPads will have faster processors and a cheaper price point in an effort to take market share away from Google Chromebooks in public school
districts. Suppose that the following data represent the percentages of students currently using Apple iPads for a sample of 18 U.S. public school districts.
Click on the datafile logo to reference the data.
DATA file
a. Compute the mean and median percentage of students currently using Apple iPads.
(to 2 decimals)
(to the nearest whole number)
Mean
Median
15 22 12 21 26 18 42 29 64 20 15 22 18 24 27 24 26 19
Range
b. Compute the first and third quartiles for these data.
(to 2 decimals)
First quartile
Third quartile
(to 2 decimals)
c. Compute the range and interquartile range for these data.
(to the nearest whole number)
(to 2 decimals)
Interquartile range
d. Compute the variance and…
Chapter 11 Solutions
Statistical Techniques in Business & Economics Connect Access Code
Ch. 11 - Tom Sevits is the owner of the Appliance Patch....Ch. 11 - Prob. 1ECh. 11 - Prob. 2ECh. 11 - Prob. 3ECh. 11 - As part of a study of corporate employees, the...Ch. 11 - Prob. 5ECh. 11 - Mary Jo Fitzpatrick is the vice president for...Ch. 11 - Prob. 2SRCh. 11 - Prob. 7ECh. 11 - For Exercises 7 and 8: (a) state the decision...
Ch. 11 - Prob. 9ECh. 11 - A recent study compared the time spent together by...Ch. 11 - Ms. Lisa Monnin is the budget director for Nexus...Ch. 11 - The Tampa Bay (Florida) Area Chamber of Commerce...Ch. 11 - It is often useful for companies to know who their...Ch. 11 - For exercises 13 and 14, assume the sample...Ch. 11 - Prob. 14ECh. 11 - Prob. 15ECh. 11 - Suppose you are an expert on the fashion industry...Ch. 11 - Prob. 4SRCh. 11 - Prob. 17ECh. 11 - Prob. 18ECh. 11 - Prob. 19ECh. 11 - Prob. 20ECh. 11 - Prob. 21CECh. 11 - Prob. 22CECh. 11 - Fry Brothers Heating and Air Conditioning Inc....Ch. 11 - A coffee manufacturer is interested in whether the...Ch. 11 - Prob. 25CECh. 11 - A computer manufacturer offers technical support...Ch. 11 - Prob. 27CECh. 11 - Prob. 28CECh. 11 - Prob. 29CECh. 11 - Prob. 30CECh. 11 - Prob. 31CECh. 11 - Prob. 32CECh. 11 - Prob. 33CECh. 11 - Prob. 34CECh. 11 - Prob. 35CECh. 11 - Prob. 36CECh. 11 - Prob. 37CECh. 11 - Prob. 38CECh. 11 - Prob. 39CECh. 11 - Prob. 40CECh. 11 - An investigation of the effectiveness of an...Ch. 11 - Prob. 42CECh. 11 - Prob. 43CECh. 11 - Prob. 44CECh. 11 - Prob. 45CECh. 11 - Prob. 46CECh. 11 - Prob. 47DACh. 11 - Prob. 49DA
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