State the hypotheses, identify the claim with the correct hypothesis, and determine whether it is a one-tailed or two-tailed test. (ii) Find the P-value. Round the answer to at least four decimal places. (iii) Make the decision and summarize the results.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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(i) State the hypotheses, identify the claim with the correct hypothesis, and determine whether it is a one-tailed or two-tailed test.

(ii) Find the P-value. Round the answer to at least four decimal places.

(iii) Make the decision and summarize the results. 

Obstacle Course Times An obstacle course was set up on a campus, and 9 volunteers were given a chance to complete it while they were being timed. They
then sampled a new energy drink and were given the opportunity to run the course again. The "before" and "after" times in seconds are shown below. Is there
sufficient evidence at a = 0.10 to conclude that the students did better the second time? Assume the variables are normally distributed.
Student
Before
After
1
69
78
Send data to Excel
2
80
3
76
75 73
4
75
68
5
72
76
6
70
70
7
67
68
8
78
65
9
68
65
olo
Transcribed Image Text:Obstacle Course Times An obstacle course was set up on a campus, and 9 volunteers were given a chance to complete it while they were being timed. They then sampled a new energy drink and were given the opportunity to run the course again. The "before" and "after" times in seconds are shown below. Is there sufficient evidence at a = 0.10 to conclude that the students did better the second time? Assume the variables are normally distributed. Student Before After 1 69 78 Send data to Excel 2 80 3 76 75 73 4 75 68 5 72 76 6 70 70 7 67 68 8 78 65 9 68 65 olo
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