BUAL 2650 GUPTA TEST QUESTIONS AND ALL
ANSWERS CORRECT (NEW)
If the hypothesis of equal population means is rejected at α =.01 in the test for
the equality of means from two independent populations, it will definitely be
rejected at α =.05.
a. always b. occasionally
Answer: a. always; c. never
A brand-new business is now assessing its customer service. The business offers
two different forms of sales: online sales and in-store sales. According to the
marketing research manager, online sales are almost 10% greater than in-store
sales. The null hypothesis would be
The following scenarios are possible: 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 brand-new business is now assessing its customer service. The business offers
two different forms of sales: online sales and in-store sales. According to the
marketing research manager, online sales are almost 10% greater than in-store
sales. The other theory would be expressed as
The answers are as follows: a. PInternet − Pstore > 0; b. PInternet − Pstore < 0;
c. PInternet − Pstore ≥.10; d. PInternet − Pstore ≤.10; and e. PInternet − Pstore
>.10 e. PInternet >.10 − Pstore
The degrees of freedom for the t statistic are ________ if we are testing the
hypothesis regarding the mean of a population of paired differences with
samples of n1 = 10 and n2 = 10.
ANSWER c. 9 a. 19 b. 18 c. 9 d. 8 e. 10
, The degree of the linear relationship between the independent and dependent
variables is gauged by the ________.
The correlation coefficient (a)
b. Value of distance
c. Y-intercept
d. Relative to the answer The correlation coefficient (a)
The value of the correlation coefficient can range from
0 and 1 a. −∞ and ∞ b.
c. 8 and 0 d. -1 and 1 e. -1 and 0 - ANSWER d. -1 and 1
A straightforward regression analysis produced the following findings.
The F table's r2 =.9162F statistic is 3.59.
The ANOVA table yielded the calculated value of F = 81.87 α =.05 p-value
=.000.
The independent and dependent variables do not have a linear relationship,
according to the null hypothesis.
A. is turned down.
b. cannot be tested using the information provided; c. is not disproved; and d. is
not a suitable null hypothesis in this case. ANSWER A. is turned down.
The amount that the basic linear regression model explains is measured by the
coefficient of determination.
a. correlation b. variation proportion
c. The standard error
d. Mean square error ANSWER b. Variance proportion
When the mean value of x is zero, the value of y is the ________ of the simple
linear regression model.
a. The y-intercept
b. slope
c. The independent variable
Response variable (d) ANSWER a. The y-intercept
The __________ in multiple regression analysis is obtained by dividing the
explained sum of squares by the total sum of squares.
ANSWERS CORRECT (NEW)
If the hypothesis of equal population means is rejected at α =.01 in the test for
the equality of means from two independent populations, it will definitely be
rejected at α =.05.
a. always b. occasionally
Answer: a. always; c. never
A brand-new business is now assessing its customer service. The business offers
two different forms of sales: online sales and in-store sales. According to the
marketing research manager, online sales are almost 10% greater than in-store
sales. The null hypothesis would be
The following scenarios are possible: 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 brand-new business is now assessing its customer service. The business offers
two different forms of sales: online sales and in-store sales. According to the
marketing research manager, online sales are almost 10% greater than in-store
sales. The other theory would be expressed as
The answers are as follows: a. PInternet − Pstore > 0; b. PInternet − Pstore < 0;
c. PInternet − Pstore ≥.10; d. PInternet − Pstore ≤.10; and e. PInternet − Pstore
>.10 e. PInternet >.10 − Pstore
The degrees of freedom for the t statistic are ________ if we are testing the
hypothesis regarding the mean of a population of paired differences with
samples of n1 = 10 and n2 = 10.
ANSWER c. 9 a. 19 b. 18 c. 9 d. 8 e. 10
, The degree of the linear relationship between the independent and dependent
variables is gauged by the ________.
The correlation coefficient (a)
b. Value of distance
c. Y-intercept
d. Relative to the answer The correlation coefficient (a)
The value of the correlation coefficient can range from
0 and 1 a. −∞ and ∞ b.
c. 8 and 0 d. -1 and 1 e. -1 and 0 - ANSWER d. -1 and 1
A straightforward regression analysis produced the following findings.
The F table's r2 =.9162F statistic is 3.59.
The ANOVA table yielded the calculated value of F = 81.87 α =.05 p-value
=.000.
The independent and dependent variables do not have a linear relationship,
according to the null hypothesis.
A. is turned down.
b. cannot be tested using the information provided; c. is not disproved; and d. is
not a suitable null hypothesis in this case. ANSWER A. is turned down.
The amount that the basic linear regression model explains is measured by the
coefficient of determination.
a. correlation b. variation proportion
c. The standard error
d. Mean square error ANSWER b. Variance proportion
When the mean value of x is zero, the value of y is the ________ of the simple
linear regression model.
a. The y-intercept
b. slope
c. The independent variable
Response variable (d) ANSWER a. The y-intercept
The __________ in multiple regression analysis is obtained by dividing the
explained sum of squares by the total sum of squares.
