As the degrees of freedom increase (and especially when the degrees of freedom are more than 90), the graph of the chi-square distribution looks more and more ______________.
-
A
symmetrical -
B
skewed right -
C
skewed left -
D
asymmetrical
The expected values are what we have from ______________.
-
A
data -
B
sampling -
C
theory -
D
experiments
Which test is the correct one to use when determining if the gender of a person is independent of the college major of the person?
-
A
Goodness-of-Fit -
B
Test for Independence
The Goodness-of-Fit hypothesis test is typically a ______________.
-
A
two-tailed test -
B
wagging-tailed test -
C
left-tailed test -
D
right-tailed test
What is the relationship between the mean and the standard deviation of the chi-square distribution?
-
A
They are the same. -
B
They are inverses of each other. -
C
The standard deviation is twice the mean. -
D
The standard deviation is the square root of 2 times the mean.
The Chi-Square Test for Independence is typically a ______________.
-
A
left-tailed test -
B
right-tailed test -
C
two-tailed -
D
wagging-tailed
Which test is the correct one to use when determining if a class distribution of grades follows the normal distribution?
-
A
Goodness-of-Fit -
B
Test for Independence
Which test is the correct one to use when determining if the numbers picked in the lottery are randomly selected?
-
A
Goodness-of-Fit -
B
Test for Independence
Which test is the correct one to use when determining if the religion of a person is related to his/her political party affiliation?
-
A
Goodness-of-Fit -
B
Test for Independence
An eight-sided die is rolled 160 times. The number of 1’s, 2’s, 3’s, 4’s, 5’s, 6’s, 7’s&8’s obtained are 24, 36, 15, 17, 9, 22, 18&19, respectively. We are testing to see if the die is fair. What is the test statistic for this problem?
-
A
12.7 -
B
21.8 -
C
9.4 -
D
46.3