Homework Help is Here – Start Your Trial Now!
Math
Statistics
How can they tell that this is a two-tailed test?

How can they tell that this is a two-tailed test?

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

How can they tell that this is a two-tailed test?

GUIDED EXERCISE 6 Testing p A medical research team is studying the effect of a new drug on red blood cells. Let x be a random variable representing milligrams of the drug given to a patient. Let y be a random variable representing red blood cells per cubic milliliter of whole blood. A random sample of n = 7 volunteer patients gave the following results. 9.2 10.1 9.0 12.5 8.8 9.1 9.5 y 5.0 4.8 4.5 5.7 5.1 4.6 4.2 Use a calculator to verify that r~ 0.689. Then use a 1% level of significance to test the claim that p + 0. (a) State the null and alternate hypotheses. What is the level of significance a? H6: ρ-0 Η: ρ 4 0; α 0.01 rVn – 2 V1 - P 0.689 V7 – 2 V1 - 0.689? - 1.5406 (b) Compute the t value of the sample test statistic. 2.126 f = 0.7248 (c) Use the Student's t distribution, Table 6 of Appendix II, to estimate the P-value. d.f. = n – 2 = 7 – 2 = 5; two-tailed test / two-tail area 0.100 0.050 d.f. = 5 2.015 2.571 ↑ Sample t = 2.126 0.050 < P-value < 0.100 (d) Do we reject or fail to reject H,? Since the interval containing the P-value lies to the right of a = P-value = 0.0866. 0.01, we do not reject H,. Technology gives 0.01 0.050 0.100
Transcribed Image Text:GUIDED EXERCISE 6 Testing p A medical research team is studying the effect of a new drug on red blood cells. Let x be a random variable representing milligrams of the drug given to a patient. Let y be a random variable representing red blood cells per cubic milliliter of whole blood. A random sample of n = 7 volunteer patients gave the following results. 9.2 10.1 9.0 12.5 8.8 9.1 9.5 y 5.0 4.8 4.5 5.7 5.1 4.6 4.2 Use a calculator to verify that r~ 0.689. Then use a 1% level of significance to test the claim that p + 0. (a) State the null and alternate hypotheses. What is the level of significance a? H6: ρ-0 Η: ρ 4 0; α 0.01 rVn – 2 V1 - P 0.689 V7 – 2 V1 - 0.689? - 1.5406 (b) Compute the t value of the sample test statistic. 2.126 f = 0.7248 (c) Use the Student's t distribution, Table 6 of Appendix II, to estimate the P-value. d.f. = n – 2 = 7 – 2 = 5; two-tailed test / two-tail area 0.100 0.050 d.f. = 5 2.015 2.571 ↑ Sample t = 2.126 0.050 < P-value < 0.100 (d) Do we reject or fail to reject H,? Since the interval containing the P-value lies to the right of a = P-value = 0.0866. 0.01, we do not reject H,. Technology gives 0.01 0.050 0.100
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 1 images

SEE SOLUTIONCheck out a sample Q&A here
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
SEE MORE TEXTBOOKS