Head movement evaluations are important because disabled individuals may be able to operate communications aids using head motion. A paper reported the accompanying data on neck rotation (in degrees) for 14 subjects both in the clockwise direction (CL) and in the counterclockwise direction (CO). For purposes of this exercise, you can assume that the 14 subjects are representative of the population of adult Americans. Subject: 1 CL: Find the df. df = CO: 2 3 4 5 6 7 Find the test statistic. (Round your answer to two decimal places.) t = 10 11 Use technology to find the P-value. (Round your answer to four decimal places.) P-value = 12 13 57.1 35.7 54.5 56.8 51.1 70.8 77.3 51.6 54.7 63.6 59.2 59.2 55.8 38.7 44.3 52.1 60.2 52.7 47.2 65.6 71.4 48.8 53.1 66.3 59.8 47.5 64.5 34.4 Based on these data, is it reasonable to conclude that mean neck rotation is greater in the clockwise direction than in the counterclockwise direction? Carry out a hypothesis test using a significance level of 0.01. (Use HCL - "CO.) 14 State your conclusion. O Fail to reject Ho. We do not have convincing evidence that mean neck rotation is greater in the clockwise direction than in the counterclockwise direction. O Reject Ho. We do not have convincing evidence that mean neck rotation is greater in the clockwise direction than in the counterclockwise direction. O Fail to reject Ho. We have convincing evidence that mean neck rotation is greater in the clockwise direction than in the counterclockwise direction. O Reject Ho. We have convincing evidence that mean neck rotation is greater in the clockwise direction than in the counterclockwise direction.
Head movement evaluations are important because disabled individuals may be able to operate communications aids using head motion. A paper reported the accompanying data on neck rotation (in degrees) for 14 subjects both in the clockwise direction (CL) and in the counterclockwise direction (CO). For purposes of this exercise, you can assume that the 14 subjects are representative of the population of adult Americans. Subject: 1 CL: Find the df. df = CO: 2 3 4 5 6 7 Find the test statistic. (Round your answer to two decimal places.) t = 10 11 Use technology to find the P-value. (Round your answer to four decimal places.) P-value = 12 13 57.1 35.7 54.5 56.8 51.1 70.8 77.3 51.6 54.7 63.6 59.2 59.2 55.8 38.7 44.3 52.1 60.2 52.7 47.2 65.6 71.4 48.8 53.1 66.3 59.8 47.5 64.5 34.4 Based on these data, is it reasonable to conclude that mean neck rotation is greater in the clockwise direction than in the counterclockwise direction? Carry out a hypothesis test using a significance level of 0.01. (Use HCL - "CO.) 14 State your conclusion. O Fail to reject Ho. We do not have convincing evidence that mean neck rotation is greater in the clockwise direction than in the counterclockwise direction. O Reject Ho. We do not have convincing evidence that mean neck rotation is greater in the clockwise direction than in the counterclockwise direction. O Fail to reject Ho. We have convincing evidence that mean neck rotation is greater in the clockwise direction than in the counterclockwise direction. O Reject Ho. We have convincing evidence that mean neck rotation is greater in the clockwise direction than in the counterclockwise direction.
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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Transcribed Image Text:Head movement evaluations are important because disabled individuals may be able to operate communications aids using head motion. A paper reported the accompanying data on neck rotation (in
degrees) for 14 subjects both in the clockwise direction (CL) and in the counterclockwise direction (CO). For purposes of this exercise, you can assume that the 14 subjects are representative of the
population of adult Americans.
Subject: 1
CL:
Find the df.
df =
CO:
2
3
44.3 52.1
4
5
6
57.1 35.7 54.5 56.8 51.1 70.8
7
Find the test statistic. (Round your answer to two decimal places.)
t =
8
77.3 51.6
60.2 52.7 47.2 65.6 71.4 48.8
Use technology to find the P-value. (Round your answer to four decimal places.)
P-value =
9
54.7
53.1
10
11
12
13
14
Based on these data, is it reasonable to conclude that mean neck rotation is greater in the clockwise direction than in the counterclockwise direction? Carry out a hypothesis test using a significance level
of 0.01. (Use CL - μCO.)
63.6 59.2 59.2 55.8 38.7
66.3 59.8 47.5 64.5 34.4
State your conclusion.
O Fail to reject Ho. We do not have convincing evidence that mean neck rotation is greater in the clockwise direction than in the counterclockwise direction.
O Reject Ho. We do not have convincing evidence that mean neck rotation is greater in the clockwise direction than in the counterclockwise direction.
O Fail to reject Ho. We have convincing evidence that mean neck rotation is greater in the clockwise direction than in the counterclockwise direction.
O Reject Ho. We have convincing evidence that mean neck rotation is greater in the clockwise direction than in the counterclockwise direction.
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