Question 24 You are given the following information about y and x. y Dependent V
ID: 3255934 • Letter: Q
Question
Question 24
You are given the following information about y and x.
y
Dependent Variable
x
Independent Variable
12
4
3
6
7
2
6
4
The coefficient of determination and sample correlation coefficients are respectively equal to:
Select one:
A. -0.4365 , -0.1905
B. 0.4365 , 0.1905
C. -0.1905 , 0.4365
D. 0.1905 , -0.4365
Question 25
Select one:
A. 0.40
B. 0.0245
C. 0.0006
D. 0.24
Question 26
Select one:
A. 0.8461
B. 0.1539
C. 0.3461
D. 0.1151
Question 27
In order to determine the average price of hotel rooms in Atlanta, a sample of 64 hotels was selected. It was determined that the average price of the rooms in the sample was $112 with a standard deviation of $16. Use a 0.05 level of significance and determine whether or not the average room price is significantly different from $108.50. State the null and alternative hypothesis.
Select one:
D. None of the above answers is correct
Question 28
In order to determine the average price of hotel rooms in Atlanta, a sample of 64 hotels was selected. It was determined that the average price of the rooms in the sample was $112 with a standard deviation of $16. Use a 0.05 level of significance and determine whether or not the average room price is significantly different from $108.50. What is the value of the test statistic?
Select one:
A. Z=1.75
B. t=1.75
C. Z=2.01
D. t=-1.75
y
Dependent Variable
x
Independent Variable
12
4
3
6
7
2
6
4
Explanation / Answer
24) correlation coefficient = -0.4365
coefficient of determination = 0.1905
Correct option is (D)
25) 0.0245 is the standard error of the test statistic
Correct option is (B)
26) X~Bin (0.40,400)
Correct option (A) 0.8461
27) (A) is the correct Alternative as we are considering a both sides alternative.
28) (B) t = 1.75 as the population and is unknown
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