BUAL 2650 Gupta Exam 2 WITH |\ |\ |\ |\ |\ |\
ANSWERS
In testing for the equality of means from two independent
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
populations, if the hypothesis of equal population means is rejected
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
at α = .01, it will ________ be rejected at α = .05
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
a. always
|\
b. sometimes
|\
c. never - CORRECT ANSWERS ✔✔a. always
|\ |\ |\ |\ |\ |\
A new company is in the process of evaluating its customer service.
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
The company offers two types of sales: (1) Internet sales and (2)
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
store sales. The marketing research manager believes that the
|\ |\ |\ |\ |\ |\ |\ |\ |\
Internet sales are more than 10 percent higher than store sales. The
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
null hypothesis would be
|\ |\ |\
a. PInternet − Pstore > .10
|\ |\ |\ |\ |\
b. PInternet − Pstore < .10
|\ |\ |\ |\ |\
c. PInternet − Pstore ≥ .10
|\ |\ |\ |\ |\
d. PInternet − Pstore ≤ .10
|\ |\ |\ |\ |\
,e. PInternet − Pstore = .10 - CORRECT ANSWERS ✔✔d. PInternet
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
− Pstore ≤ .10
|\ |\ |\
A new company is in the process of evaluating its customer service.
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
The company offers two types of sales: (1) Internet sales and (2)
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
store sales. The marketing research manager believes that the
|\ |\ |\ |\ |\ |\ |\ |\ |\
Internet sales are more than 10 percent higher than store sales. The
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
alternative hypothesis would be stated as
|\ |\ |\ |\ |\
a. PInternet − Pstore > 0
|\ |\ |\ |\ |\
b. PInternet − Pstore < 0
|\ |\ |\ |\ |\
c. PInternet − Pstore ≥ .10
|\ |\ |\ |\ |\
d. PInternet − Pstore ≤ .10
|\ |\ |\ |\ |\
e. PInternet − Pstore > .10 - CORRECT ANSWERS ✔✔e. PInternet
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
− Pstore > .10
|\ |\ |\
If we are testing the hypothesis about the mean of a population of
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
paired differences with samples of n1 = 10, n2 = 10, the degrees of
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
freedom for the t statistic is ________.
|\ |\ |\ |\ |\ |\
a. 19
|\
b. 18
|\
c. 9
|\
, d. 8
|\
e. 10 - CORRECT ANSWERS ✔✔c. 9
|\ |\ |\ |\ |\ |\
The ________ measures the strength of the linear relationship
|\ |\ |\ |\ |\ |\ |\ |\ |\
between the dependent variable and the independent variable.
|\ |\ |\ |\ |\ |\ |\
a. correlation coefficient
|\ |\
b. distance value
|\ |\
c. Y-intercept
|\
d. residual - CORRECT ANSWERS ✔✔a. correlation coefficient
|\ |\ |\ |\ |\ |\ |\
The correlation coefficient may assume any value between
|\ |\ |\ |\ |\ |\ |\
a. 0 and 1
|\ |\ |\
b. −∞ and ∞
|\ |\ |\
c. 0 and 8
|\ |\ |\
d. −1 and 1
|\ |\ |\
e. −1 and 0 - CORRECT ANSWERS ✔✔d. −1 and 1
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
The following results were obtained as part of a simple regression
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
analysis.
ANSWERS
In testing for the equality of means from two independent
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
populations, if the hypothesis of equal population means is rejected
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
at α = .01, it will ________ be rejected at α = .05
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
a. always
|\
b. sometimes
|\
c. never - CORRECT ANSWERS ✔✔a. always
|\ |\ |\ |\ |\ |\
A new company is in the process of evaluating its customer service.
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
The company offers two types of sales: (1) Internet sales and (2)
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
store sales. The marketing research manager believes that the
|\ |\ |\ |\ |\ |\ |\ |\ |\
Internet sales are more than 10 percent higher than store sales. The
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
null hypothesis would be
|\ |\ |\
a. PInternet − Pstore > .10
|\ |\ |\ |\ |\
b. PInternet − Pstore < .10
|\ |\ |\ |\ |\
c. PInternet − Pstore ≥ .10
|\ |\ |\ |\ |\
d. PInternet − Pstore ≤ .10
|\ |\ |\ |\ |\
,e. PInternet − Pstore = .10 - CORRECT ANSWERS ✔✔d. PInternet
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
− Pstore ≤ .10
|\ |\ |\
A new company is in the process of evaluating its customer service.
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
The company offers two types of sales: (1) Internet sales and (2)
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
store sales. The marketing research manager believes that the
|\ |\ |\ |\ |\ |\ |\ |\ |\
Internet sales are more than 10 percent higher than store sales. The
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
alternative hypothesis would be stated as
|\ |\ |\ |\ |\
a. PInternet − Pstore > 0
|\ |\ |\ |\ |\
b. PInternet − Pstore < 0
|\ |\ |\ |\ |\
c. PInternet − Pstore ≥ .10
|\ |\ |\ |\ |\
d. PInternet − Pstore ≤ .10
|\ |\ |\ |\ |\
e. PInternet − Pstore > .10 - CORRECT ANSWERS ✔✔e. PInternet
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
− Pstore > .10
|\ |\ |\
If we are testing the hypothesis about the mean of a population of
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
paired differences with samples of n1 = 10, n2 = 10, the degrees of
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
freedom for the t statistic is ________.
|\ |\ |\ |\ |\ |\
a. 19
|\
b. 18
|\
c. 9
|\
, d. 8
|\
e. 10 - CORRECT ANSWERS ✔✔c. 9
|\ |\ |\ |\ |\ |\
The ________ measures the strength of the linear relationship
|\ |\ |\ |\ |\ |\ |\ |\ |\
between the dependent variable and the independent variable.
|\ |\ |\ |\ |\ |\ |\
a. correlation coefficient
|\ |\
b. distance value
|\ |\
c. Y-intercept
|\
d. residual - CORRECT ANSWERS ✔✔a. correlation coefficient
|\ |\ |\ |\ |\ |\ |\
The correlation coefficient may assume any value between
|\ |\ |\ |\ |\ |\ |\
a. 0 and 1
|\ |\ |\
b. −∞ and ∞
|\ |\ |\
c. 0 and 8
|\ |\ |\
d. −1 and 1
|\ |\ |\
e. −1 and 0 - CORRECT ANSWERS ✔✔d. −1 and 1
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
The following results were obtained as part of a simple regression
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
analysis.
