use ive the probiem. aim? othesis, Ha ,. Но e(s) and identify the rejection region(s). s) below.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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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 12 residents
a mean annual income of $40,100 and a standard deviation of $8400. In County B, a random sample of 10 residents has a mean annual income of $39,600 and a standard deviation of $6000. At a = 0.005, answer
parts (a) through (e). Assume the population variances are not equal. If convenient, use technology to solve the problem.
Question Help ▼
Which hypothesis is the claim?
V The alternative hypothesis, Ha
O The null hypothesis, Ho
(b) Find the critical value(s) and identify the rejection region(s).
Enter the critical value(s) below.
1.
(Type an integer or decimal rounded to three decimal places as needed. Use a comma to separate answers as needed.)
()
More
Enter your answer in the answer box and then click Check Answer.
4 parts
remaining
Clear All
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P Type here to search
a
8:49 PM
99+
2/21/2021
20
16
144
ho
Insert
prt sc
delete
esc
IOI
&
#3
3.
%23
$
6.
8.
6.
+ backspace
home
%3D
pg u
W
E
R
T
Y
tab
enter
G
H.
J
K
caps lock
A
pause
t shif
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 12 residents a mean annual income of $40,100 and a standard deviation of $8400. In County B, a random sample of 10 residents has a mean annual income of $39,600 and a standard deviation of $6000. At a = 0.005, answer parts (a) through (e). Assume the population variances are not equal. If convenient, use technology to solve the problem. Question Help ▼ Which hypothesis is the claim? V The alternative hypothesis, Ha O The null hypothesis, Ho (b) Find the critical value(s) and identify the rejection region(s). Enter the critical value(s) below. 1. (Type an integer or decimal rounded to three decimal places as needed. Use a comma to separate answers as needed.) () More Enter your answer in the answer box and then click Check Answer. 4 parts remaining Clear All Check Answer P Type here to search a 8:49 PM 99+ 2/21/2021 20 16 144 ho Insert prt sc delete esc IOI & #3 3. %23 $ 6. 8. 6. + backspace home %3D pg u W E R T Y tab enter G H. J K caps lock A pause t shif
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