Adecember 2009 poll asked a random sample of people whether they thought their country was heading in the right direction. each respondent answered "right direction" or "wrong direction" and was classified as republican, democrat, or independent. if we were interested in testing whether party affiliation was associated with the answer to the question, would this be a test of homogeneity or of independence? explain.

This would be test of independence because it contain only one sample test

Step-by-step explanation:

Test of independence determine two factors are independent or not

For example

if we do a test of independence  

null hypothesis : H 0: Being a cell phone user while driving and receiving a speeding violation are independent events. If the null hypothesis were true, we would expect about 28 people to use cell phones while driving and to receive a speeding violation.

Therefore in the given question Each respondent answer that it might be in "Right Direction " or "Wrong Direction".

So it is a independent test.

it is x=-4

step-by-step explanation:

13.46

step-by-step explanation:

16.80 x .20 = 13.46