A sports writer wished to see if a football filled with helium travels farther, on average, than a football filled with air. To test this, the writer used 18 adult male volunteers. These volunteers were randomly divided into two groups of 9 subjects each. Group 1 kicked a football filled with helium to the recommended pressure. Group 2 kicked a football filled with air to the recommended pressure. The mean yardage for group 1 was x_bar1 = 30 yards, with a standard deviation s, = 8 yards. The mean yardage for group 2 was x bar2 = 26 yards, with a standard deviation s, = 6 yards. Assume the two groups of kicks are independent. Let u1 and µ2 represent the mean yardage we would observe for the entire population represented by the volunteers if all members of this population kicked, respectively, a helium and an airfilled football. Assume that two-sample t- procedures are safe to use. Suppose the researcher had wished to test the hypotheses. Suppose the researcher had wished to test the hypotheses Ho: H, = H2, Ha: p,> H The P-value for the test is (use the conservative Approach) Select one: O a. between 0.05 and 0.01. O b. below 0.01. O c. between 0.10 and 0.05. O d. larger than 0.10.

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
A sports writer wished to see if a football filled with helium travels farther, on average, than a football filled with air. To test this, the writer used 18
adult male volunteers. These volunteers were randomly divided into two groups of 9 subjects each. Group 1 kicked a football filled with helium to
the recommended pressure. Group 2 kicked a football filled with air to the recommended pressure. The mean yardage for group 1 was x_bar1 =
30 yards, with a standard deviation s, = 8 yards. The mean yardage for group 2 was x_bar2 = 26 yards, with a standard deviation s, = 6 yards.
Assume the two groups of kicks are independent. Let u1 and u2 represent the mean yardage we would observe for the entire population
represented by the volunteers if all members of this population kicked, respectively, a helium and an airfilled football. Assume that two-sample t-
procedures are safe to use. Suppose the researcher had wished to test the hypotheses. Suppose the researcher had wished to test the
hypotheses
H,: H, = 2, Ha:P,>
The P-value for the test is (use the conservative Approach)
Select one:
O a. between 0.05 and 0.01.
O b. below 0.01.
O c. between 0.10 and 0.05.
O d. larger than 0.10.
Transcribed Image Text:A sports writer wished to see if a football filled with helium travels farther, on average, than a football filled with air. To test this, the writer used 18 adult male volunteers. These volunteers were randomly divided into two groups of 9 subjects each. Group 1 kicked a football filled with helium to the recommended pressure. Group 2 kicked a football filled with air to the recommended pressure. The mean yardage for group 1 was x_bar1 = 30 yards, with a standard deviation s, = 8 yards. The mean yardage for group 2 was x_bar2 = 26 yards, with a standard deviation s, = 6 yards. Assume the two groups of kicks are independent. Let u1 and u2 represent the mean yardage we would observe for the entire population represented by the volunteers if all members of this population kicked, respectively, a helium and an airfilled football. Assume that two-sample t- procedures are safe to use. Suppose the researcher had wished to test the hypotheses. Suppose the researcher had wished to test the hypotheses H,: H, = 2, Ha:P,> The P-value for the test is (use the conservative Approach) Select one: O a. between 0.05 and 0.01. O b. below 0.01. O c. between 0.10 and 0.05. O d. larger than 0.10.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

Blurred answer
Similar questions
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