Question

N4 Xf A B C D E F G H I J K L M N C 1 2 2. A claim is made that the average salary for all jobs in Minnesota is less than $68,000. You are going to test 3 4 5 the claim using $\alpha = 0.01$ and assume that your data is normally distributed and the population standard deviaiton ($\sigma$) is not known. 6 7 8 2a. Write the null and alternative hypotheses symbolically and identify which hypothesis is the claim. Then identify if the test is left-tailed, right-tailed, or two-tailed and explain why. 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 2b. Identify and explain which test statistic you will use for your hypothesis test: z or t? Find the value of the test statistic. Provide your calculations in the cells designated to the right. Explain your answers below. Calculations/Values Formulas/Answers Mean ($\bar{x}$) Standard Deviation n $\mu$ Test Statistic Critical Value P-value

          N4
Xf
A
B
C
D
E
F
G
H
I
J
K
L
M
N
C
1
2
2. A claim is made that the average salary for all jobs in Minnesota is less than $68,000. You are going to test
3
4
5
the claim using $\alpha = 0.01$ and assume that your data is normally distributed and the population standard
deviaiton ($\sigma$) is not known.
6
7
8
2a. Write the null and alternative hypotheses symbolically and identify which hypothesis is the claim. Then
identify if the test is left-tailed, right-tailed, or two-tailed and explain why.
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
2b. Identify and explain which test statistic you will use for your hypothesis test: z or t? Find the value of the
test statistic.
Provide your calculations in the cells designated to the right. Explain your answers below.
Calculations/Values
Formulas/Answers
Mean ($\bar{x}$)
Standard Deviation
n
$\mu$
Test Statistic
Critical Value
P-value

N4
Xf
A
B
C
D
E
F
G
H
I
J
K
L
M
N
C
1
2
2. A claim is made that the average salary for all jobs in Minnesota is less than 68,000. You are going to test
3
4
5
the claim usingα= 0.01and assume that your data is normally distributed and the population standard
deviaiton (σ) is not known.
6
7
8
2a. Write the null and alternative hypotheses symbolically and identify which hypothesis is the claim. Then
identify if the test is left-tailed, right-tailed, or two-tailed and explain why.
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
2b. Identify and explain which test statistic you will use for your hypothesis test: z or t? Find the value of the
test statistic.
Provide your calculations in the cells designated to the right. Explain your answers below.
Calculations/Values
Formulas/Answers
Mean (x̅)
Standard Deviation
nμTest Statistic
Critical Value
P-value

Added by Alec J.

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