BUAL 2650 Gupta Exam 2 Questions with
100% Accurate verified detailed Solutions
latest update 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 --- correct 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 --- correct 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 --- correct 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 --- correct 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 --- correct 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 --- correct 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
b. cannot be tested with the given information
c. is not rejected
d. is not an appropriate null hypothesis for this situation. --- correct
answer ---a. is rejected
100% Accurate verified detailed Solutions
latest update 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 --- correct 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 --- correct 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 --- correct 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 --- correct 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 --- correct 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 --- correct 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
b. cannot be tested with the given information
c. is not rejected
d. is not an appropriate null hypothesis for this situation. --- correct
answer ---a. is rejected
