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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.

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.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section: Chapter Questions
Problem 19SGR
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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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