1.Select the name of the test that should be used to assess if there is a relationship between seat belt use and ethnic group.A. One-proportion z-test

B.

2

2goodness of fit

C.

2

2test of independence

2.Which of the following conditions must be met for the hypothesis test to be valid? Select all that apply.

A.The sample size must be at least 30 or the population data must be normally distributed.

B.There must be at least 10 "success" and 10 "failure" observations.

C.The observations must be independent of one another.

D.There must be an expected count of at least 5 in every cell of the table.

3.What is the expected value for the number of Hispanic drivers who were wearing a seat belt?Expected value =

4.State the degrees of freedom for this test.=

df=

5.Calculate the test statistic:6.What was the contribution toward this test statistic of Hispanic drivers who were wearing a seat belt?Test statistic =

7.Calculate the p-value for this test.=

the mosaic plot for a random sample of male drivers observed in Ethnic group of driver Belted Not Belted Total Black 270 95 365 Hispanic 372 163 535 White 196 66 262 Total 838 324 1 162 Ethnicity Black Hispanic White wearing a seat belt not wearing a seat belt Use of Seat Belt P W X 5 MacBook Air DII 4) F5 F6 F7 F8 F9 F10 > k 6 8 O