An article reported on a study in which each of 13 workers was provided with both a conventional shovel and a shovel whose blade was perforated with small holes. The authors of the cited article provided the following data on energy expenditure [kcal/kg(subject)/lb(clay)]. Worker: 2 4 5 Conventional: 0.0015 0.0015 0.0018 0.0022 0.001 0.0016 0.0028 Perforated: 0.0015 0.001 0.0019 0.0013 0.0011 0.0017 0.0024 Worker: 10 11 12 13 Conventional: 0.0021 0.0015 0.0014 0.0023 0.0017 0.002 Perforated: 0.0021 0.0013 0.0013 0.0017 0.0015 0.0013 IA USE SALT Do these data provide convincing evidence that the mean energy expenditure using the conventional shovel exceeds that using the perforated shovel? Test the relevant hypotheses using a significance level of 0.05. (Use SALT to calculate the P-value. Use Ha = "conventional""perforated Round your test statistic to one decimal place and your P-value to three decimal places.) df = p-value = State your conclusion. O we fail to reject Ho. We have evidence that the mean energy expenditure using the conventional shovel exceeds that using the perforated shovel. O we fail to reject Ho. We have convincing evidence that the mean energy expenditure using the conventional shovel exceeds that using the perforated shovel. O we reject Ho: We have no evidence that the mean energy expenditure using the conventional shovel exceeds that using the perforated shovel. O we reject Ho: We have convincing evidence that the mean energy expenditure using the conventional shovel exceeds that using the perforated shovel.
An article reported on a study in which each of 13 workers was provided with both a conventional shovel and a shovel whose blade was perforated with small holes. The authors of the cited article provided the following data on energy expenditure [kcal/kg(subject)/lb(clay)]. Worker: 2 4 5 Conventional: 0.0015 0.0015 0.0018 0.0022 0.001 0.0016 0.0028 Perforated: 0.0015 0.001 0.0019 0.0013 0.0011 0.0017 0.0024 Worker: 10 11 12 13 Conventional: 0.0021 0.0015 0.0014 0.0023 0.0017 0.002 Perforated: 0.0021 0.0013 0.0013 0.0017 0.0015 0.0013 IA USE SALT Do these data provide convincing evidence that the mean energy expenditure using the conventional shovel exceeds that using the perforated shovel? Test the relevant hypotheses using a significance level of 0.05. (Use SALT to calculate the P-value. Use Ha = "conventional""perforated Round your test statistic to one decimal place and your P-value to three decimal places.) df = p-value = State your conclusion. O we fail to reject Ho. We have evidence that the mean energy expenditure using the conventional shovel exceeds that using the perforated shovel. O we fail to reject Ho. We have convincing evidence that the mean energy expenditure using the conventional shovel exceeds that using the perforated shovel. O we reject Ho: We have no evidence that the mean energy expenditure using the conventional shovel exceeds that using the perforated shovel. O we reject Ho: We have convincing evidence that the mean energy expenditure using the conventional shovel exceeds that using the perforated shovel.
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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Question
![An article reported on a study in which each of 13 workers was provided with both a conventional shovel and a shovel whose blade was perforated with small holes. The authors of the cited article provided the following data on energy expenditure
[kcal/kg(subject)/lb(clay)].
Worker:
2
4
5
6
Conventional: 0.0015 0.0015 0.0018 0.0022 0.001
0.0016 0.0028
Perforated:
0.0015 0.001
0.0019 0.0013 0.0011
0.0017 0.0024
Worker:
10
11
12
13
Conventional: 0.0021 0.0015 0.0014 0.0023 0.0017 0.002
Perforated:
0.0021 0.0013 0.0013 0.0017 0.0015
0.0013
n USE SALT
Do these data provide convincing evidence that the mean energy expenditure using the conventional shovel exceeds that using the perforated shovel? Test the relevant hypotheses using a significance level of 0.05. (Use SALT to calculate the P-value. Use
Hd = Hconventional - Hperforated Round your test statistic to one decimal place and your P-value to three decimal places.)
t=
df =
p-value =
State your conclusion.
O we fail to reject H,. We have no evidence that the mean energy expenditure using the conventional shovel exceeds that using the perforated shovel.
O we fail to reject H,. We have convincing evidence that the mean energy expenditure using the conventional shovel exceeds that using the perforated shovel.
O we reject Ho: We have no evidence that the mean energy expenditure using the conventional shovel exceeds that using the perforated shovel.
O we reject Ho: We have convincing evidence that the mean energy expenditure using the conventional shovel exceeds that using the perforated shovel.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fcb80a5a3-fc38-4f85-bd23-aea358ee9bcd%2F4b365247-a9ec-40ed-b36a-4a9873610479%2Foa474ve_processed.png&w=3840&q=75)
Transcribed Image Text:An article reported on a study in which each of 13 workers was provided with both a conventional shovel and a shovel whose blade was perforated with small holes. The authors of the cited article provided the following data on energy expenditure
[kcal/kg(subject)/lb(clay)].
Worker:
2
4
5
6
Conventional: 0.0015 0.0015 0.0018 0.0022 0.001
0.0016 0.0028
Perforated:
0.0015 0.001
0.0019 0.0013 0.0011
0.0017 0.0024
Worker:
10
11
12
13
Conventional: 0.0021 0.0015 0.0014 0.0023 0.0017 0.002
Perforated:
0.0021 0.0013 0.0013 0.0017 0.0015
0.0013
n USE SALT
Do these data provide convincing evidence that the mean energy expenditure using the conventional shovel exceeds that using the perforated shovel? Test the relevant hypotheses using a significance level of 0.05. (Use SALT to calculate the P-value. Use
Hd = Hconventional - Hperforated Round your test statistic to one decimal place and your P-value to three decimal places.)
t=
df =
p-value =
State your conclusion.
O we fail to reject H,. We have no evidence that the mean energy expenditure using the conventional shovel exceeds that using the perforated shovel.
O we fail to reject H,. We have convincing evidence that the mean energy expenditure using the conventional shovel exceeds that using the perforated shovel.
O we reject Ho: We have no evidence that the mean energy expenditure using the conventional shovel exceeds that using the perforated shovel.
O we reject Ho: We have convincing evidence that the mean energy expenditure using the conventional shovel exceeds that using the perforated shovel.
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