Introduction To Statistics And Data Analysis
6th Edition
ISBN: 9781337793612
Author: PECK, Roxy.
Publisher: Cengage Learning,
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Chapter 16.1, Problem 3E
a.
To determine
Test whether the data suggest a difference in the mean climbing times for the two gaits.
b.
To determine
Interpret the 95% confidence interval for the difference between the mean climbing times.
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A paper investigated the driving behavior of teenagers by observing their vehicles as they left a high school parking lot and then again at a site approximately
1
2
mile from the school. Assume that it is reasonable to regard the teen drivers in this study as representative of the population of teen drivers.
MaleDriver
FemaleDriver
1.3
-0.3
1.3
0.6
0.9
1.1
2.1
0.7
0.7
1.1
1.3
1.2
3
0.1
1.3
0.9
0.6
0.5
2.1
0.5
(a) Use a .01 level of significance for any hypothesis tests. Data consistent with summary quantities appearing in the paper are given in the table. The measurements represent the difference between the observed vehicle speed and the posted speed limit (in miles per hour) for a sample of male teenage drivers and a sample of female teenage drivers. (Use ?males − ?females. Round your test statistic to two decimal places. Round your degrees of freedom down to the nearest whole number. Round your p-value to three decimal places.)
t
=
df
=…
A paper investigated the driving behavior of teenagers by observing their vehicles as they left a high school parking lot and then again at a site approximately
1
2
mile from the school. Assume that it is reasonable to regard the teen drivers in this study as representative of the population of teen drivers.
MaleDriver
FemaleDriver
1.4
-0.2
1.2
0.5
0.9
1.1
2.1
0.7
0.7
1.1
1.3
1.2
3
0.1
1.3
0.9
0.6
0.5
2.1
0.5
(a) Use a .01 level of significance for any hypothesis tests. Data consistent with summary quantities appearing in the paper are given in the table. The measurements represent the difference between the observed vehicle speed and the posted speed limit (in miles per hour) for a sample of male teenage drivers and a sample of female teenage drivers. (Use ?males − ?females. Round your test statistic to two decimal places. Round your degrees of freedom down to the nearest whole number. Round your p-value to three decimal places.)
t
=
df
=…
Another experiment involving processor speed (Sp) and size of random access memory (RAM) for computers produced the following data
Sp1
Sp2
RAM 1
48
37
38
35
37
39
RAM 2
30
35
31
22
26
30
Are the factors Sp and RAM or their interaction statistically significant?
Chapter 16 Solutions
Introduction To Statistics And Data Analysis
Ch. 16.1 - Urinary fluoride concentration (in parts per...Ch. 16.1 - Prob. 2ECh. 16.1 - Prob. 3ECh. 16.1 - A blood lead level of 70 mg/ml has been commonly...Ch. 16.1 - The effectiveness of antidepressants in treating...Ch. 16.1 - Prob. 6ECh. 16.1 - Prob. 7ECh. 16.2 - The effect of a restricted diet in the treatment...Ch. 16.2 - Peak force (N) on the hand was measured just prior...Ch. 16.2 - In an experiment to study the way in which...
Ch. 16.2 - Prob. 11ECh. 16.2 - Prob. 12ECh. 16.2 - Prob. 13ECh. 16.2 - Prob. 14ECh. 16.2 - Prob. 15ECh. 16.2 - Prob. 16ECh. 16.2 - Prob. 17ECh. 16.2 - The signed-rank test can be adapted for use in...Ch. 16.3 - Prob. 19ECh. 16.3 - Prob. 20ECh. 16.3 - The given data on phosphorus concentration in...Ch. 16.3 - Prob. 22ECh. 16.3 - Prob. 23ECh. 16.3 - The following data on amount of food consumed (g)...Ch. 16.3 - The article Effect of Storage Temperature on the...
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