True or False: Using R, once the datasets for placebo and andro have been entered and assigned the names placebo and andro, respectively, the R code given below could be used for conducting the hypothesis test using the directional alternative hypothesis with a 0.10 significance level. R Code: t.test(placebo, andro, alternative = O True O False = "less")
True or False: Using R, once the datasets for placebo and andro have been entered and assigned the names placebo and andro, respectively, the R code given below could be used for conducting the hypothesis test using the directional alternative hypothesis with a 0.10 significance level. R Code: t.test(placebo, andro, alternative = O True O False = "less")
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
first picture is the background information
Transcribed Image Text:**Transcription for Educational Website:**
**Question:**
True or False: Using R, once the datasets for placebo and andro have been entered and assigned the names 'placebo' and 'andro', respectively, the R code given below *could* be used for conducting the hypothesis test using the *directional* alternative hypothesis with a 0.10 significance level.
**R Code:**
`t.test(placebo, andro, alternative = "less")`
- ⬤ True
- ○ False
**Explanation:**
The question is asking whether the specified R code can be used for a one-tailed t-test with a significance level of 0.10. The "alternative = 'less'" parameter indicates that the test is assessing whether the mean of the 'placebo' dataset is less than the mean of the 'andro' dataset. This setup is consistent with a directional (one-tailed) hypothesis test.
Transcribed Image Text:**Scenario for Study on Androstenedione and Strength**
Androstenedione (andro) is a steroid that some athletes believe can enhance strength. Researchers examined this hypothesis by selecting a random sample of men and randomly assigning them to either receive andro or a placebo. One of the key variables in this study was the increase in “lat pull down” strength (measured in pounds) for each participant after four weeks. (Note: A lat pull down is a type of weightlifting exercise.)
There are no graphs or diagrams in this image.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
Recommended textbooks for you
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
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
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
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
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
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
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman