8. The average amount of time boys and girls ages 7 through 11 spend playing sports each day is believed to be the same. An experiment is done, data is collected, resulting in the data below: Sample Size Average Number of Hours Playing Sports Per Day Of 32 girls, the average number hours playing sports is 2 with a standard deviation of 0.75. Of 35 boys, the average number hours playing sports is 3.2 with a standard deviation of 1. there a difference in the average amount of time boys and girls ages 7 through 11 play sports ach day? Test at the 5% level of significance. (You DO NOT need to show all steps- just state est statistic, p-value versus alpha, formal conclusion and practical conclusion in a complete entence)
8. The average amount of time boys and girls ages 7 through 11 spend playing sports each day is believed to be the same. An experiment is done, data is collected, resulting in the data below: Sample Size Average Number of Hours Playing Sports Per Day Of 32 girls, the average number hours playing sports is 2 with a standard deviation of 0.75. Of 35 boys, the average number hours playing sports is 3.2 with a standard deviation of 1. there a difference in the average amount of time boys and girls ages 7 through 11 play sports ach day? Test at the 5% level of significance. (You DO NOT need to show all steps- just state est statistic, p-value versus alpha, formal conclusion and practical conclusion in a complete entence)
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Need help with number 8 and 9 I don’t quite understand the question.
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$50,781. (Be sure to show all steps of the hypothesis test)
8. The average amount of time boys and girls ages 7 through 11 spend playing sports each
day is believed to be the same. An experiment is done, data is collected, resulting in the
data below:
Sample Size Average Number of Hours Playing Sports Per Day
Of 32 girls, the average number hours playing sports is 2 with a standard deviation of 0.75.
Of 35 boys, the average number hours playing sports is 3.2 with a standard deviation of 1.
Is there a difference in the average amount of time boys and girls ages 7 through 11 play sports
each day? Test at the 5% level of significance. (You DO NOT need to show all steps- just state
test statistic, p-value versus alpha, formal conclusion and practical conclusion in a complete
sentence)
9. A medical researcher wants to test the effects of calcium supplements on men's blood
pressure. In part of the study, 10 randomly selected men are given a calcium supplement for
12 weeks. The researcher measures the men's diastolic blood pressure at the beginning and
end of the study. At a = 0.10, can the researcher claim that the men's diastolic blood pressure
decreased?
4
5
6
7
9
10
Patient 1
Before 107
3
110
123
129
112
111
107
112
136
102
After
100
114
105
112
115
116
106
102
125
104
115%
Page 3 of 3
707 words
2 Focus
目](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fec00f85d-2845-42aa-a887-b2442479ff82%2F24e6b79d-0bfa-4eeb-ab37-7c9e20d55697%2F1ee099w_processed.jpeg&w=3840&q=75)
Transcribed Image Text:AutoSave
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$50,781. (Be sure to show all steps of the hypothesis test)
8. The average amount of time boys and girls ages 7 through 11 spend playing sports each
day is believed to be the same. An experiment is done, data is collected, resulting in the
data below:
Sample Size Average Number of Hours Playing Sports Per Day
Of 32 girls, the average number hours playing sports is 2 with a standard deviation of 0.75.
Of 35 boys, the average number hours playing sports is 3.2 with a standard deviation of 1.
Is there a difference in the average amount of time boys and girls ages 7 through 11 play sports
each day? Test at the 5% level of significance. (You DO NOT need to show all steps- just state
test statistic, p-value versus alpha, formal conclusion and practical conclusion in a complete
sentence)
9. A medical researcher wants to test the effects of calcium supplements on men's blood
pressure. In part of the study, 10 randomly selected men are given a calcium supplement for
12 weeks. The researcher measures the men's diastolic blood pressure at the beginning and
end of the study. At a = 0.10, can the researcher claim that the men's diastolic blood pressure
decreased?
4
5
6
7
9
10
Patient 1
Before 107
3
110
123
129
112
111
107
112
136
102
After
100
114
105
112
115
116
106
102
125
104
115%
Page 3 of 3
707 words
2 Focus
目
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