The following shows the number of individuals in a random sample of 300 adults who indicated they support the new tax proposal. Political Party Support
Democrats 100
Republicans 120
Independents 80
We are interested in determining whether the opinions of the individuals of the three groups are uniformly distributed. If the opinions of the individuals of the three groups are uniformly distributed, the expected frequency for each group is
a. 0.333.
b. 0.50.
c. 50.
d. none.
Refer to question 1. The calculated value for the test statistic equals.
a. 300.
b. 4.
c. 0.
d. 8.
Refer to question 1. The number of degrees of freedom associated with this problem is .
a. 2.
b. 3.
c. 300.
d. 299.
Refer to question 1. The test statistic for goodness of fit has a chi-square distribution with k – 1 degrees of freedom provided that the expected frequencies for all categories are .
a. 5 or more.
b. 10 or more.
c. k or more.
d. 2k.
Refer to question 1. This test for goodness of fit .
a. is a lower-tail test.
b. is an upper tail test.
c. is a two-tailed test.
d. can be a lower-tail or an upper-tail test.