A personnel director in a particular state claims that the mean annual income is greater in one of the state's counties (county A) than it is in another county (county B). In County A, a random sample of 14 residents has a mean annual income of $40,300 and a standard deviation of $8100. In County B, a random sample of 13 residents has a mean annual income of $39,600 and a standard deviation of $5600. At a = 0.05, answer parts (a) through (e). Assume the population variances are not equal. (a) The null hypothesis, Ho, is V. The alternative hypothesis, H, is Which hypothesis is the claim? O The alternative hypothesis, H. O The null hypothesis, Ho (b) Calculate d.f. and read the tableto find to, The critical value, to is:O (Type an integer or decimal rounded to three decimal places as needed. Use a comma to separate answers as needed.) Select the correct rejection region(s) below. O A. t< -to O B. t< -1o, t>to Oc. t>t O D. -6
A personnel director in a particular state claims that the mean annual income is greater in one of the state's counties (county A) than it is in another county (county B). In County A, a random sample of 14 residents has a mean annual income of $40,300 and a standard deviation of $8100. In County B, a random sample of 13 residents has a mean annual income of $39,600 and a standard deviation of $5600. At a = 0.05, answer parts (a) through (e). Assume the population variances are not equal. (a) The null hypothesis, Ho, is V. The alternative hypothesis, H, is Which hypothesis is the claim? O The alternative hypothesis, H. O The null hypothesis, Ho (b) Calculate d.f. and read the tableto find to, The critical value, to is:O (Type an integer or decimal rounded to three decimal places as needed. Use a comma to separate answers as needed.) Select the correct rejection region(s) below. O A. t< -to O B. t< -1o, t>to Oc. t>t O D. -6
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
100%
![A personnel director in a particular state claims that the mean annual income is greater in one of the state's counties (county A) than it is in another county (county B). In County A, a random sample of 14 residents has a mean annual income of
$40,300 and a standard deviation of $8100. In County B, a random sample of 13 residents has a mean annual income of $39,600 and a standard deviation of $5600. At a = 0.05, answer parts (a) through (e). Assume the population variances are
not equal.
(a) The null hypothesis, Ho, is
The alternative hypothesis, Ha, is
Which hypothesis is the claim?
The alternative hypothesis, Ha
The null hypothesis, Ho
(b) Calculate d.f. and read the tableto find to.
The critical value, to is:
(Type an integer or decimal rounded to three decimal places as needed. Use a comma to separate answers as needed.)
Select the correct rejection region(s) below.
O A. t< - to
B. t< - to, t>to
O C. t>to
O D. - to <t<to
(c) Find the standardized test statistic.
t=
(Type an integer or decimal rounded to three decimal places as needed.)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F53000c28-491d-41be-848a-14fc4791e71d%2F4a20bd3a-52ad-4282-b1d9-3f447eb603e0%2Fqfn6hz_processed.png&w=3840&q=75)
Transcribed Image Text:A personnel director in a particular state claims that the mean annual income is greater in one of the state's counties (county A) than it is in another county (county B). In County A, a random sample of 14 residents has a mean annual income of
$40,300 and a standard deviation of $8100. In County B, a random sample of 13 residents has a mean annual income of $39,600 and a standard deviation of $5600. At a = 0.05, answer parts (a) through (e). Assume the population variances are
not equal.
(a) The null hypothesis, Ho, is
The alternative hypothesis, Ha, is
Which hypothesis is the claim?
The alternative hypothesis, Ha
The null hypothesis, Ho
(b) Calculate d.f. and read the tableto find to.
The critical value, to is:
(Type an integer or decimal rounded to three decimal places as needed. Use a comma to separate answers as needed.)
Select the correct rejection region(s) below.
O A. t< - to
B. t< - to, t>to
O C. t>to
O D. - to <t<to
(c) Find the standardized test statistic.
t=
(Type an integer or decimal rounded to three decimal places as needed.)
Expert Solution
![](/static/compass_v2/shared-icons/check-mark.png)
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 3 steps with 4 images
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.Recommended textbooks for you
![MATLAB: An Introduction with Applications](https://www.bartleby.com/isbn_cover_images/9781119256830/9781119256830_smallCoverImage.gif)
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
![Probability and Statistics for Engineering and th…](https://www.bartleby.com/isbn_cover_images/9781305251809/9781305251809_smallCoverImage.gif)
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
![Statistics for The Behavioral Sciences (MindTap C…](https://www.bartleby.com/isbn_cover_images/9781305504912/9781305504912_smallCoverImage.gif)
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](https://www.bartleby.com/isbn_cover_images/9781119256830/9781119256830_smallCoverImage.gif)
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
![Probability and Statistics for Engineering and th…](https://www.bartleby.com/isbn_cover_images/9781305251809/9781305251809_smallCoverImage.gif)
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
![Statistics for The Behavioral Sciences (MindTap C…](https://www.bartleby.com/isbn_cover_images/9781305504912/9781305504912_smallCoverImage.gif)
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…](https://www.bartleby.com/isbn_cover_images/9780134683416/9780134683416_smallCoverImage.gif)
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
![The Basic Practice of Statistics](https://www.bartleby.com/isbn_cover_images/9781319042578/9781319042578_smallCoverImage.gif)
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](https://www.bartleby.com/isbn_cover_images/9781319013387/9781319013387_smallCoverImage.gif)
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman