Researchers studying pleasant touch sensations measured the firing frequency (impulses per second) of nerves that were stimulated by a light brushing stroke on the forearm and also recorded the subject's numerical rating of how pleasant the sensation was. The accompanying data was read from a graph in a paper Firing Frequency Pleasantness Rating 23 24 22 25 26 34 34 35 34 0.3 1.0 1.2 1.2 1.0 2.0 2.3 2.2 2.3 2.7 (a) Estimate the mean change in pleasantness rating associated with an increase of 1 impulse per second in firing frequency using a 95% confidence interval. (Use technology or the Distribution Calculators page in SALT to find the critical value. Round your answers to three decimal places.) x.x) Interpret the resulting interval We are 95% confident that the mean change in firing frequency associated with an increase of 1 in pleasantness rating is in this interval. O We are 95% confident that the mean change in firing frequency associated with an increase of 1 in pleasantness rating is outside this interval. We are 95% confident that the mean change in pleasantness rating associated with an increase of 1 impulse per second in firing frequency is outside this interval We are 95% confident that the mean change in pleasantness rating associated with an increase of 1 impulse per second in firing frequency is in this interval. (b) Carry out a hypothesis test using a 0.05 to decide if there is convincing evidence of a useful linear relationship between firing frequency and pleasantness rating. Calculate the test statistic. (Round your answer to two decimal places.) +-x Use technology to find the P-value for this test. (Round your answer to four decimal places.) P-value- x What can you conclude? 10 Fail to reject H. We have convincing evidence of a useful linear relationship between firing frequency and pleasantness rating. Fall to reject H. We do not have convincing evidence of a useful linear relationship between firing frequency and pleasantness rating. Reject H. We have convincing evidence of a useful linear relationship between firing frequency and pleasantness rating. O Reject H. We do not have convincing evidence of a useful linear relationship between firing frequency and pleasantness rating. x ✓
Researchers studying pleasant touch sensations measured the firing frequency (impulses per second) of nerves that were stimulated by a light brushing stroke on the forearm and also recorded the subject's numerical rating of how pleasant the sensation was. The accompanying data was read from a graph in a paper Firing Frequency Pleasantness Rating 23 24 22 25 26 34 34 35 34 0.3 1.0 1.2 1.2 1.0 2.0 2.3 2.2 2.3 2.7 (a) Estimate the mean change in pleasantness rating associated with an increase of 1 impulse per second in firing frequency using a 95% confidence interval. (Use technology or the Distribution Calculators page in SALT to find the critical value. Round your answers to three decimal places.) x.x) Interpret the resulting interval We are 95% confident that the mean change in firing frequency associated with an increase of 1 in pleasantness rating is in this interval. O We are 95% confident that the mean change in firing frequency associated with an increase of 1 in pleasantness rating is outside this interval. We are 95% confident that the mean change in pleasantness rating associated with an increase of 1 impulse per second in firing frequency is outside this interval We are 95% confident that the mean change in pleasantness rating associated with an increase of 1 impulse per second in firing frequency is in this interval. (b) Carry out a hypothesis test using a 0.05 to decide if there is convincing evidence of a useful linear relationship between firing frequency and pleasantness rating. Calculate the test statistic. (Round your answer to two decimal places.) +-x Use technology to find the P-value for this test. (Round your answer to four decimal places.) P-value- x What can you conclude? 10 Fail to reject H. We have convincing evidence of a useful linear relationship between firing frequency and pleasantness rating. Fall to reject H. We do not have convincing evidence of a useful linear relationship between firing frequency and pleasantness rating. Reject H. We have convincing evidence of a useful linear relationship between firing frequency and pleasantness rating. O Reject H. We do not have convincing evidence of a useful linear relationship between firing frequency and pleasantness rating. x ✓
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Researchers studying pleasant touch sensations measured the firing frequency (impulses per second) of nerves that were stimulated by a light brushing stroke on the forearm and also recorded the subject's numerical rating of how pleasant the sensation was. The accompanying data was read from a graph in
a paper.
Firing Frequency Pleasantness Rating
23
24
22
25
26
29
34
34
35
34
0.3
1.0
1.2
1.2
1.0
2.0
2.3
2.2
2.3
2.7
(a) Estimate the mean change in pleasantness rating associated with an increase of 1 impulse per second in firing frequency using a 95% confidence interval. (Use technology or the Distribution Calculators page in SALT to find the critical value. Round your answers to three decimal places.)
x
Jx )
Interpret the resulting interval.
We are 95% confident that the mean change in firing frequency associated with an increase of 1 in pleasantness rating is in this interval.
O We are 95% confident that the mean change in firing frequency associated with an increase of 1 in pleasantness rating is outside this interval.
O We are 95% confident that the mean change in pleasantness rating associated with an increase of 1 impulse per second in firing frequency is outside this interval.
O We are 95% confident that the mean change in pleasantness rating associated with an increase of 1 impulse per second in firing frequency is in this interval.
(b) Carry out a hypothesis test using a = 0.05 to decide if there is convincing evidence of a useful linear relationship between firing frequency and pleasantness rating.
Calculate the test statistic. (Round your answer to two decimal places.)
x
Use technology to find the P-value for this test. (Round your answer to four decimal places.)
P-value=
x
What can you conclude?
O Fail to reject H. We have convincing evidence of a useful linear relationship between firing frequency and pleasantness rating.
O Fail to reject H. We do not have convincing evidence of a useful linear relationship between firing frequency and pleasantness rating.
Ⓒ Reject H. We have convincing evidence of a useful linear relationship between firing frequency and pleasantness rating.
O Reject H. We do not have convincing evidence of a useful linear relationship between firing frequency and pleasantness rating.
X
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