Quiz 11
1. 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
2. The expected values are what we have from ______________.
a. data
b. sampling
c. theory
d. experiments
3. 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
4. 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
5. 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.
6. The Chi-Square Test for Independence is typically a ______________.
a. left-tailed test
b. right-tailed test
c. two-tailed test
d. wagging-tailed test
7. 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 of Independence
8. 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 of Independence
9. 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 of Independence
10. 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
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