EBK STATISTICS FOR THE BEHAVIORAL SCIEN
3rd Edition
ISBN: 9781506386249
Author: PRIVITERA
Publisher: VST
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Chapter 1.5, Problem 4.1LC
To determine
Check whether the statement “A ratio scale variable can be continuous or discrete” is true or false.
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Rothamsted Experimental Station (England) has studied wheat production since 1852. Each year many small plots of equal size but different soil/fertilizer conditions are planted with wheat. At the end of the growing season, the yield (in pounds) of the wheat on the plot is measured. Suppose for a random sample of years, one plot gave the following annual wheat production (in pounds):
4.46
4.21
4.40
4.81
2.81
2.90
4.93
3.54
4.16
4.48
3.26
4.74
4.97
4.02
4.91
2.59
Use a calculator to verify that the sample variance for this plot is . Another random sample of years for a second plot gave the following annual wheat production (in pounds):
3.89
3.81
3.95
4.07
4.01
3.73
4.02
3.78
3.72
3.96
3.62
3.76
4.02
3.73
3.94
4.03
Use a calculator to verify that the sample variance for this plot is . Suppose that we test the claim using that the population variance of annual wheat production for the first plot is larger…
It is thought that prehistoric Native Americans did not take their best tools, pottery, and household items when they visited higher elevations for their summer camps. It is hypothesized that archaeological sites tend to lose their cultural identity and specific cultural affiliation as the elevation of the site increases. Let x be the elevation (in thousands of feet) for an archaeological site in the southwestern United States. Let y be the percentage of unidentified artifacts (no specific cultural affiliation) at a given elevation. Suppose that the following data were obtained for a collection of archaeological sites in New Mexico:
x
5.50
6.00
6.75
7.00
7.75
y
37
38
92
70
99
Find the equation of the least squares line . Round a and b to three decimal places.
A fitness trainer wants to estimate the effect of fitness activities on muscle mass for different weight categories of club members. They choose the most popular fitness classes at the gym: yoga, circuit training, and high-intensity interval training (HIIT). Suppose that the weights of club members are separated into three levels: under 155 pounds, 155 – 200 pounds, and over 200 pounds. Draw a flow chart showing the design of this experiment.
Chapter 1 Solutions
EBK STATISTICS FOR THE BEHAVIORAL SCIEN
Ch. 1.2 - Prob. 1.1LCCh. 1.2 - Prob. 1.2LCCh. 1.2 - Prob. 1.3LCCh. 1.2 - Prob. 1.4LCCh. 1.3 - Prob. 2.1LCCh. 1.3 - Prob. 2.2LCCh. 1.3 - Prob. 2.3LCCh. 1.4 - Prob. 3.1LCCh. 1.4 - Prob. 3.2LCCh. 1.4 - Prob. 3.3LC
Ch. 1.4 - Prob. 3.4LCCh. 1.5 - Prob. 4.1LCCh. 1.5 - Prob. 4.2LCCh. 1.5 - Prob. 4.3LCCh. 1.5 - Prob. 4.4LCCh. 1.5 - Prob. 4.5LCCh. 1 - Prob. 1FPCh. 1 - Prob. 2FPCh. 1 - Prob. 3FPCh. 1 - Prob. 4FPCh. 1 - Prob. 5FPCh. 1 - Prob. 6FPCh. 1 - Prob. 7FPCh. 1 - Prob. 8FPCh. 1 - Prob. 9FPCh. 1 - Prob. 10FPCh. 1 - Prob. 11CAPCh. 1 - Prob. 12CAPCh. 1 - Prob. 13CAPCh. 1 - Prob. 14CAPCh. 1 - Prob. 15CAPCh. 1 - Prob. 16CAPCh. 1 - Prob. 17CAPCh. 1 - Prob. 18CAPCh. 1 - Prob. 19CAPCh. 1 - Prob. 20CAPCh. 1 - Prob. 21CAPCh. 1 - Prob. 22CAPCh. 1 - Prob. 23CAPCh. 1 - Prob. 24CAPCh. 1 - Prob. 25CAPCh. 1 - Prob. 26CAPCh. 1 - Prob. 27PRCh. 1 - Prob. 28PRCh. 1 - Prob. 29PRCh. 1 - Prob. 30PRCh. 1 - Prob. 31PRCh. 1 - Prob. 32PR
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