Mathematics Homework Help

USF Statistics & Multiple Population Proportions Worksheet

 

Q1 If there are three or more populations, then it is
a. possible to test for equality of three or more population proportions
b. impossible to test for equality of the three population proportions, because chi-square tests deal with only two populations
c. customary to use a t distribution to test for equality of the three population proportions
d. reasonable to test for equality of multiple population proportions using chi-square lower tail tests

Q2 The degrees of freedom for a data table with 10 rows and 10 columns is
a. 100
b. 81
c. 18
d. 20
Q3 When individuals in a sample of 150 were asked whether or not they supported capital punishment, the following information was obtained.
Do you support Number of
capital punishment? individuals
Yes 45
No 55
No Opinion 50
We are interested in determining whether or not the opinions of the individuals (as to Yes, No, and No Opinion) are uniformly distributed. The p-value is
a. less than .01.
b. larger than .1.
c. between .01 and .05.
d. between .05 and .1.

Q4 The following table shows the number of individuals in a sample of 450 who indicated they support the new tax proposal.
Political Party Support
Democrats 150
Republicans 170
Independents 130
We are interested in determining whether or not the opinions of the individuals of the three groups are uniformly distributed. The expected frequency for each group is
a. 0.333
b. 0.5
c. 150
d. 135
Q5 The test for goodness of fit
a. is always a lower tail test.
b. is always an upper tail test.
c. is always a two-tailed test.
d. can be a lower or an upper tail test.
Q6 The ANOVA procedure is a statistical approach for determining whether or not the means of _____ are equal
a. two samples
b. two or more samples
c. two populations
d. three or more populations
Q7 In the ANOVA, treatments refer to
a. experimental units
b. different levels of a factor
c. the dependent variables
d. statistical applications