Statistical Techniques in Business and Economics
18th Edition
ISBN: 9781260579611
Author: Douglas Lind; William Marchal; Samuel Wathen
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Question
Chapter 2, Problem 48CE
To determine
To summarize: The data and write a paragraph that describes the findings.
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If we increase our food intake, we generally gain weight. Nutrition scientists can calculate the amount of weight gain that would be associated with a given increase in calories. In one study, 16 nonobese adults, aged 25 to 36 years, were fed 1000 calories per day in excess of the calories needed to maintain a stable body weight. The subjects maintained this diet for 8 weeks, so they consumed a total of 56,000 extra calories. According to theory, 3500 extra calories will translate into a weight gain of 1 pound. Therefore, we expect each of these subjects to gain 56,000/3500 = 16 pounds (lb). Here are the weights before and after the 8-week period, expressed in kilograms (kg).
Subject
1
2
3
4
5
6
7
8
Weight before
55.7
54.9
59.6
62.3
74.2
75.6
70.7
53.3
Weight after
61.7
58.7
66.0
66.2
79.1
82.2
74.2
59.3
Subject
9
10
11
12
13
14
15
16
Weight before
73.3
63.4
68.1
73.7
91.7
55.9
61.7
57.8
Weight after
79.1
66.1
73.5
76.8
93.0
63.0
68.1
60.2
Find the mean (x bar) and the…
Chapter 2 Solutions
Statistical Techniques in Business and Economics
Ch. 2 - DeCenzo Specialty Food and Beverage Company has...Ch. 2 - A pie chart shows the relative market share of...Ch. 2 - In a marketing study, 100 consumers were asked to...Ch. 2 - A total of 1,000 residents in Minnesota were asked...Ch. 2 - Two thousand frequent business travelers are asked...Ch. 2 - Wellstone Inc. produces and markets replacement...Ch. 2 - A small business consultant is investigating the...Ch. 2 - In the first quarter of last year, the 11 members...Ch. 2 - Prob. 3SRCh. 2 - A set of data consists of 38 observations. How...
Ch. 2 - A set of data consists of 45 observations between...Ch. 2 - A set of data consists of 230 observations between...Ch. 2 - A set of data contains 53 observations. The...Ch. 2 - Wachesaw Manufacturing Inc. produced the following...Ch. 2 - The Quick Change Oil Company has a number of...Ch. 2 - The manager of the BiLo Supermarket in Mt....Ch. 2 - The food services division of Cedar River...Ch. 2 - The annual imports of a selected group of...Ch. 2 - Mollys Candle Shop has several retail stores in...Ch. 2 - The following chart shows the number of patients...Ch. 2 - The following frequency distribution reports the...Ch. 2 - Prob. 18ECh. 2 - A sample of the hourly wages of 15 employees at...Ch. 2 - The following cumulative frequency and the...Ch. 2 - The cumulative frequency and the cumulative...Ch. 2 - The frequency distribution representing the number...Ch. 2 - Prob. 22ECh. 2 - Describe the similarities and differences of...Ch. 2 - Describe the similarities and differences between...Ch. 2 - Alexandra Damonte will be building a new resort in...Ch. 2 - Prob. 26CECh. 2 - A data set consists of 83 observations. How many...Ch. 2 - A data set consists of 145 observations that range...Ch. 2 - The following is the number of minutes to commute...Ch. 2 - The following data give the weekly amounts spent...Ch. 2 - A social scientist is studying the use of iPods by...Ch. 2 - David Wise handles his own investment portfolio,...Ch. 2 - Prob. 33CECh. 2 - The monthly issues of the Journal of Finance are...Ch. 2 - The following histogram shows the scores on the...Ch. 2 - The following chart summarizes the selling price...Ch. 2 - A chain of sport shops catering to beginning...Ch. 2 - Prob. 38CECh. 2 - A recent survey showed that the typical American...Ch. 2 - Midland National Bank selected a sample of 40...Ch. 2 - Residents of the state of South Carolina earned a...Ch. 2 - A recent study of home technologies reported the...Ch. 2 - Merrill Lynch recently completed a study regarding...Ch. 2 - Prob. 44CECh. 2 - Refer to the following chart: a. What is the name...Ch. 2 - The following chart depicts the annual revenues,...Ch. 2 - Prob. 47CECh. 2 - Prob. 48CECh. 2 - One of the most popular candies in the United...Ch. 2 - The number of families who used the Minneapolis...Ch. 2 - Refer to the North Valley Real Estate data that...Ch. 2 - Prob. 52DACh. 2 - Refer to the Lincolnville School District bus...
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- If we increase our food intake, we generally gain weight. Nutrition scientists can calculate the amount of weight gain that would be associated with a given increase in calories. In one study, 16 nonobese adults, aged 25 to 36 years, were fed 1000 calories per day in excess of the calories needed to maintain a stable body weight. The subjects maintained this diet for 8 weeks, so they consumed a total of 56,000 extra calories. According to theory, 3500 extra calories will translate into a weight gain of 1 pound. Therefore, we expect each of these subjects to gain 56,000/3500 = 16 pounds (lb). Here are the weights before and after the 8-week period, expressed in kilograms (kg). Subject 1 2 3 4 5 6 7 8 Weight before 55.7 54.9 59.6 62.3 74.2 75.6 70.7 53.3 Weight after 61.7 58.7 66.0 66.2 79.1 82.2 74.2 59.3 Subject 9 10 11 12 13 14 15 16 Weight before 73.3 63.4 68.1 73.7 91.7 55.9 61.7 57.8 Weight after 79.1 66.1 73.5 76.8 93.0 63.0 68.1 60.2 Report the 95% confidence…arrow_forwardTen years ago, the population of Northern Cascadia was 20% smaller than the population that of Southern Cascadia, but over the last ten years, the population of Southern Cascadia declined by 15% while that of Northern Cascadia increased by by 30% with the result that Northern Cascadia now has 12,575 more people than Southern Cascadia had ten years ago. How many people does Northern Cascadia have now? 4.arrow_forwardA simplified economy consists of the two sectors Transportation and Energy. For each $1 worth of output, the transportation sector $0.44 worth of input from the transportation sector and $0.28 of inputarrow_forward
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