Researchers are trying to determine if there is a difference in the average lifespan of two species of fruit fly: Ceratitis capitata and Drosophila melanogaster. They measure the lifespans of two random samples of each species. The SRS of Ceratitis capitata was of size 105 and had an average lifespan of 51 days with a standard deviation of 7 days. The SRS of Drosophila melanogaster was of size 95 and had an average lifespan of 48 days with a standard deviation of 6 days. Let μ₁ denote the mean lifespan of Ceratitis capitata and μ2 denote the mean lifespan of Drosophila melanogaster. The researchers will conduct a test of significance at level a = 0.01 to test if these two species have different average lifespans. Which hypotheses should they use? Ho M₁ = μ₂ and H₁ μ₁ μ₂ - a Ho: 1 = 2 and Ha 1 < μ2 Ho : μι = με and Ha : με > με Ho : μ = μo and Ha : μ < μο

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
Help needed urgently please
Researchers are trying to determine if there is a
difference in the average lifespan of two species of
fruit fly: Ceratitis capitata and Drosophila
melanogaster. They measure the lifespans of two
random samples of each species. The SRS of Ceratitis
capitata was of size 105 and had an average lifespan
of 51 days with a standard deviation of 7 days. The
SRS of Drosophila melanogaster was of size 95 and had
an average lifespan of 48 days with a standard
deviation of 6 days.
Let μ₁ denote the mean lifespan of Ceratitis
capitata and μ2 denote the mean lifespan of Drosophila
melanogaster.
The researchers will conduct a test of significance at
level a 0.01 to test if these two species have
different average lifespans. Which hypotheses
should they use?
Ho : μι = μ2 and Ha : μι # μ2
=
Ho: 1
=
M2 and Ha ₁ < µ2
:
Ho: μ1
Ho : μ = μo and Ha : μ < μο
=
μ₂ and Haμ₁ > µ2
Transcribed Image Text:Researchers are trying to determine if there is a difference in the average lifespan of two species of fruit fly: Ceratitis capitata and Drosophila melanogaster. They measure the lifespans of two random samples of each species. The SRS of Ceratitis capitata was of size 105 and had an average lifespan of 51 days with a standard deviation of 7 days. The SRS of Drosophila melanogaster was of size 95 and had an average lifespan of 48 days with a standard deviation of 6 days. Let μ₁ denote the mean lifespan of Ceratitis capitata and μ2 denote the mean lifespan of Drosophila melanogaster. The researchers will conduct a test of significance at level a 0.01 to test if these two species have different average lifespans. Which hypotheses should they use? Ho : μι = μ2 and Ha : μι # μ2 = Ho: 1 = M2 and Ha ₁ < µ2 : Ho: μ1 Ho : μ = μo and Ha : μ < μο = μ₂ and Haμ₁ > µ2
Expert Solution
steps

Step by step

Solved in 2 steps

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