BUAL 2650 GUPTA EXAM 2 ACTUAL
2026/2027 QUESTIONS AND 100%
CORRECT 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 - 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
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
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
e. −1 and 0 - ANSWER-d. −1 and 1
The following results were obtained as part of a simple regression analysis.
r2 = .9162F
statistic from the F table = 3.59
Calculated value of F from the ANOVA table = 81.87
α = .05
p-value = .000
The null hypothesis of no linear relationship between the dependent variable and
the independent variable
a. is rejected
2026/2027 QUESTIONS AND 100%
CORRECT 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 - 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
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
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
e. −1 and 0 - ANSWER-d. −1 and 1
The following results were obtained as part of a simple regression analysis.
r2 = .9162F
statistic from the F table = 3.59
Calculated value of F from the ANOVA table = 81.87
α = .05
p-value = .000
The null hypothesis of no linear relationship between the dependent variable and
the independent variable
a. is rejected
