Statistics for Management and Economics (Book Only)
11th Edition
ISBN: 9781337296946
Author: Gerald Keller
Publisher: Cengage Learning
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Chapter 17.4, Problem 47E
To determine
The positive first-order autocorrelation.
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In your own words, discuss the relationship between a t-test and a confidence interval.
Researchers conducted a prospective cohort study to assess the association between dietary supplements and cognitive ability among children. A total of 500 children age 12-17 years who take an omega-3 fatty acid supplement are compared with 500 children age 12-17 years who do not take an omega-3 fatty acid supplement. Researchers follow the children for 2 years. During this time, 300 children who take the supplement earn what is classified as a “high” score on a cognitive test while 200 children who do not take the supplement earn what is classified as a “high” score on the same cognitive test. Show calculations.
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Suppose that we want to compare the cholestrol contents of four competing diet foods on the basis of the following data (in milligrams per package) which were obtained for three 6-ounce packages of each of the diet foods:
Diet food A: 3.6 4.1 4.0 Diet food B : 3.1 3.2 3.9 Diet food C: 3.2 3.5 3.5 Diet food D: 3.5 3.8 3.8
a) Fill in the blanks below.
b) Test at the 0.05 level of significance whether the differences among means obtained for the four competing diet foods ( Diet A, B, C, D ) are significant? (Ftable=4.07)
ONE-WAY ANOVA TABLE
Source of Variation
Degrees of Freedom
Sum of Squares
Mean Square
F
Treatments
?
0.54
?
?
Error
?
?
?
Total
?
1.18
Chapter 17 Solutions
Statistics for Management and Economics (Book Only)
Ch. 17.2 - Prob. 1ECh. 17.2 - Prob. 2ECh. 17.2 - Prob. 3ECh. 17.2 - Prob. 4ECh. 17.2 - Prob. 5ECh. 17.2 - Prob. 6ECh. 17.2 - Prob. 7ECh. 17.2 - Prob. 8ECh. 17.2 - Prob. 9ECh. 17.2 - Prob. 10E
Ch. 17.2 - Prob. 11ECh. 17.2 - Prob. 12ECh. 17.2 - Prob. 13ECh. 17.2 - Prob. 14ECh. 17.2 - Prob. 15ECh. 17.2 - Prob. 16ECh. 17.2 - Prob. 17ECh. 17.2 - Prob. 18ECh. 17.2 - Prob. 19ECh. 17.2 - Prob. 20ECh. 17.2 - Prob. 21ECh. 17.2 - Prob. 22ECh. 17.2 - Prob. 23ECh. 17.2 - Prob. 24ECh. 17.3 - Prob. 25ECh. 17.3 - Prob. 26ECh. 17.3 - Prob. 27ECh. 17.3 - Prob. 28ECh. 17.3 - Prob. 29ECh. 17.3 - Prob. 30ECh. 17.3 - Prob. 31ECh. 17.3 - Prob. 32ECh. 17.3 - Prob. 33ECh. 17.3 - Prob. 34ECh. 17.3 - Prob. 35ECh. 17.3 - Prob. 36ECh. 17.3 - Prob. 37ECh. 17.3 - Prob. 38ECh. 17.3 - Prob. 39ECh. 17.3 - Prob. 40ECh. 17.3 - Prob. 41ECh. 17.3 - Prob. 42ECh. 17.3 - Prob. 43ECh. 17.3 - Prob. 44ECh. 17.3 - Prob. 45ECh. 17.3 - Prob. 46ECh. 17.4 - Prob. 47ECh. 17.4 - Prob. 48ECh. 17.4 - Prob. 49ECh. 17.4 - Prob. 50ECh. 17.4 - Prob. 51ECh. 17.4 - Prob. 52ECh. 17.4 - Prob. 53ECh. 17.4 - Prob. 54ECh. 17.4 - Prob. 55ECh. 17.4 - Prob. 56ECh. 17.4 - Prob. 57ECh. 17.A - Prob. 1ECh. 17.A - Prob. 2ECh. 17.A - Prob. 3ECh. 17.A - Prob. 4ECh. 17.A - Prob. 5ECh. 17.A - Prob. 6ECh. 17.A - Prob. 7ECh. 17.A - Prob. 8ECh. 17.A - Prob. 9ECh. 17.A - Prob. 10ECh. 17.A - Prob. 11ECh. 17.A - Prob. 12ECh. 17.A - Prob. 13ECh. 17.A - Prob. 14ECh. 17.A - Prob. 15ECh. 17.A - Prob. 16ECh. 17.A - Prob. 17ECh. 17.A - Prob. 18ECh. 17.A - Prob. 19ECh. 17.A - Prob. 20ECh. 17.A - Prob. 21ECh. 17.A - Prob. 22ECh. 17.A - Prob. 23ECh. 17.A - Prob. 24ECh. 17.A - Prob. 25ECh. 17.A - Prob. 26ECh. 17.A - Prob. 27ECh. 17.A - Prob. 28ECh. 17.A - Prob. 29ECh. 17.A - Prob. 30ECh. 17.A - Prob. 31ECh. 17.A - Prob. 32ECh. 17.A - Prob. 33ECh. 17.A - Prob. 34ECh. 17.A - Prob. 35ECh. 17.A - Prob. 36ECh. 17.A - Prob. 37ECh. 17.A - Prob. 38ECh. 17.A - Prob. 39ECh. 17.A - Prob. 40ECh. 17.A - Prob. 41ECh. 17.A - Prob. 42ECh. 17.A - Prob. 43ECh. 17 - Prob. 58CECh. 17 - Prob. 59CECh. 17 - Prob. 60CE
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