1|Page
BUAL 2650 GUPTA EXAM 2 QUESTIONS AND
ANSWERS 2025
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 - .....ANSWER ..... ✔✔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
,2|Page
d. PInternet − Pstore ≤ .10
e. PInternet − Pstore = .10 - .....ANSWER ..... ✔✔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 - .....ANSWER ..... ✔✔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
, 3|Page
b. 18
c. 9
d. 8
e. 10 - .....ANSWER ..... ✔✔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 - .....ANSWER ..... ✔✔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
BUAL 2650 GUPTA EXAM 2 QUESTIONS AND
ANSWERS 2025
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 - .....ANSWER ..... ✔✔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
,2|Page
d. PInternet − Pstore ≤ .10
e. PInternet − Pstore = .10 - .....ANSWER ..... ✔✔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 - .....ANSWER ..... ✔✔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
, 3|Page
b. 18
c. 9
d. 8
e. 10 - .....ANSWER ..... ✔✔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 - .....ANSWER ..... ✔✔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
