To compare the averape swimming times for twvo swimmers. each swimmer was asked to sim freestyle for a distance of 100 yards at randomly selected times. The swimmers were thoroughly rested between laps and did not race against each other so that each sample of times was an independent random sample. The times for each of 10 trials are shown for the twe swimmers. Swimmer 1 Swimmer 2 59.61 59.75 59.80 59.42 59.49 59.44 59.33 9.62 59.64 59.71 59.75 59.49 59.49 59.42 s9.62 59.82 60.00 59.69 59.8s 59.50 A USE SALT Suppose that swimmer 2 was last year's winner when the twe swimmers raced. Does it appear that the average time for swimmer 2 is still faster than the average time for swimmer i in the 100-yard freestyle? (Use Swimmer 1- Swimmer 2. Use a 0.05.) State the null and alternative hypotheses. Hgi ( - Hg) - 0 versus H: ( - Hg) < 0 O Mgi ( - Hg) < 0 versus H ( - Hg) >0 O Ho! ( - 2) - o versus H ( - Ha) >0 O Ho: ( - g)- o versus H ( - Hg) = 0 O Hgi ( - Hg) - o versus H ( - H) 0 State the test statistic. (Round your answer to three decimal places.) Find the appreximate p-value for the test. Opvalue <0.005 O 0.005 < e-value 0.010 0.010 < p-value < 0.025 lo 0.025 < p-value < 0.050 lo 0.050 p-value 0.100 value > 0.100 Enterpret the results. OH, is rejected. There is sufficient evidence to conclude that the averape time for simmer 2 is still faster than that of swimmer 1. OH, is not rejected. There is insufficient evidence to conclude that the average time for swimmer 2is stil faster than that of swimmer 1. O H, is not rejected. There is sufficient evidence to conclude that the average time for swimmer 2 is still faster than that of swimmer 1. H, is rejected. There is insufficient evidence to conclude that the average time for swimmer 2 is still faster than that of swimmer 1.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
Question
100%

8

To compare the average swimming times for two swimmers, each swimmer was asked to swim freestyle for a distance of 100 yards at randomly selected times. The swimmers were thoroughly rested between laps and did not race against each other, so that each sample of times was an independent random sample. The times for each of
10 trials are shown for the two swimmers.
Swimmer 1
Swimmer 2
59.61
59.75
59.80
59.42
59.49
59.44
59.33
59.62
59.64
59.71
59.75
59.49
59.49
59.62
59.63
59.82
60.00
59.69
59.85
59.50
In USE SALT
Suppose that swimmer 2 was last year's winner when the two swimmers raced. Does it appear that the average time for swimmer 2 is still faster than the average time for swimmer 1 in the 100-yard freestyle? (Use Swimmer 1 - Swimmer 2. Use a = 0.05.)
State the null and alternative hypotheses.
O Ho: (H, - l2) = 0 versus H: (M, - H2) < 0
O Ho: (H1 - U2) < O versus H,: (ly - H2) > 0
O Ho: (H, - l2) = 0 versus H: (M, - H2) > 0
O Ho: (H, - u2) + 0 versus H: (H, - H2) = 0
O Ho: (H, - 2) = 0 versus H: (M, - H2) = 0
State the test statistic. (Round your answer to three decimal places.)
t = 0.301
Find the approximate p-value for the test.
O p-value < 0.005
O 0.005 < p-value < 0.01o
O 0.010 < p-value < 0.025
O 0.025 < p-value < 0.050
O 0.050 < p-value < 0.100
O p-value > 0.100
Interpret the results.
O H, is rejected. There is sufficient evidence to conclude that the average time for swimmer 2 is still faster than that of swimmer 1.
O H, is not rejected. There is insufficient evidence to conclude that the average time for swimmer 2 is still faster than that of swimmer 1.
H, is not rejected. There is sufficient evidence to conclude that the average time for swimmer 2 is still faster than that of swimmer 1.
O H, is rejected. There is insufficient evidence to conclude that the average time for swimmer 2 is still faster than that of swimmer 1.
Transcribed Image Text:To compare the average swimming times for two swimmers, each swimmer was asked to swim freestyle for a distance of 100 yards at randomly selected times. The swimmers were thoroughly rested between laps and did not race against each other, so that each sample of times was an independent random sample. The times for each of 10 trials are shown for the two swimmers. Swimmer 1 Swimmer 2 59.61 59.75 59.80 59.42 59.49 59.44 59.33 59.62 59.64 59.71 59.75 59.49 59.49 59.62 59.63 59.82 60.00 59.69 59.85 59.50 In USE SALT Suppose that swimmer 2 was last year's winner when the two swimmers raced. Does it appear that the average time for swimmer 2 is still faster than the average time for swimmer 1 in the 100-yard freestyle? (Use Swimmer 1 - Swimmer 2. Use a = 0.05.) State the null and alternative hypotheses. O Ho: (H, - l2) = 0 versus H: (M, - H2) < 0 O Ho: (H1 - U2) < O versus H,: (ly - H2) > 0 O Ho: (H, - l2) = 0 versus H: (M, - H2) > 0 O Ho: (H, - u2) + 0 versus H: (H, - H2) = 0 O Ho: (H, - 2) = 0 versus H: (M, - H2) = 0 State the test statistic. (Round your answer to three decimal places.) t = 0.301 Find the approximate p-value for the test. O p-value < 0.005 O 0.005 < p-value < 0.01o O 0.010 < p-value < 0.025 O 0.025 < p-value < 0.050 O 0.050 < p-value < 0.100 O p-value > 0.100 Interpret the results. O H, is rejected. There is sufficient evidence to conclude that the average time for swimmer 2 is still faster than that of swimmer 1. O H, is not rejected. There is insufficient evidence to conclude that the average time for swimmer 2 is still faster than that of swimmer 1. H, is not rejected. There is sufficient evidence to conclude that the average time for swimmer 2 is still faster than that of swimmer 1. O H, is rejected. There is insufficient evidence to conclude that the average time for swimmer 2 is still faster than that of swimmer 1.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 4 steps with 2 images

Blurred answer
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman