Basic Business Statistics, Student Value Edition
14th Edition
ISBN: 9780134685113
Author: Mark L. Berenson, David M. Levine, David F. Stephan, Kathryn Szabat
Publisher: PEARSON
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Textbook Question
Chapter 1, Problem 7PS
For each of the following variables, determine whether the variables is categorical or numerical and determine its measurement scale. if the variables is numerical, determine whether the variable is discrete or continuous.
a. Amount of money spent on clothing in the past month
b. Favourite department store
c. Most likely time period during which shopping for clothing takes places (weekday, weeknight, or weekend)
d. Number of pairs of shoes owned
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Veterinarians suspect that enteroliths, calcifications in the gut of horses, are related to diet-in particular, alfalfa. To investigate
this suspicion, a group of veterinarians collected information on the diet of horses and whether the horses developed enteroliths.
The table displays the findings.
less than 25% alfalfa in diet
25%-50% alfalfa in diet
greater than 50% alfalfa in die
Total
3
Has enteroliths
0.05
Does not have enteroliths
0.40
Total
0.07
0.25
0.08
0.20
0.15
0.80
0.45
0.32
0.23
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The probability that a randomly selected horse has enteroliths given that it is fed more than 50% alfalfa is:
○ 0.08.
0.23.
○ 0.2.
○ 0.348.
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/1100
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Many young men in North America and Europe (but not in Asia) tend to think they need more muscle to be attractive. One
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chose two images, one that represented his own level of body muscle and one that he thought represented "what women prefer."
The mean gap between self-image and "what women prefer" was 2.35 kg/m².
Suppose that the "muscle gap" in the population of all young men has a Normal distribution with standard deviation 2.5 kg/m²
Give a 90% confidence interval for the mean amount of muscle
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Is the normal distribution important in statistics analysis? If yes, why? If no, why?
Is the normal distribution always being defined by its mean and standard deviation? Discuss.
Discuss with examples
c) Graphs illustrating the problems and solutions are recommended
Chapter 1 Solutions
Basic Business Statistics, Student Value Edition
Ch. 1 - Four different beverages are sold at a fast-food...Ch. 1 - U. S. businesses are listed by size small medium,...Ch. 1 - The time it takes to download a video from the...Ch. 1 - For each of the following variables, determine...Ch. 1 - The following information is collected from...Ch. 1 - For each of the following variables, determine...Ch. 1 - For each of the following variables, determine...Ch. 1 - Suppose the following information is collected...Ch. 1 - One of the variables most often included in...Ch. 1 - If two students score a 90 on the same...
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