Math 140 -problem set 4e

  

FOR ANY OTHER EVEN N0.

Question 2

If conditional proportions are almost the same from one group to another, it indicates that the categorical variable that decides the groups is probably not related to the categorical variable that the proportions came from.

  

Question 6

What proportion of the math 140 students both smoke and drive alone to school?

  

Question 10

What proportion of the drive alone math 140 students smoke? What proportion of the dropped off math 140 students smoke? Do the proportions appear to be close or significantly different? What does this tell us about the relationship between smoking and the type of transportation?

  

Question 14

What proportion of the math 140 students do not text and drive and have not been in a car accident?

  

Question 18

What proportion of the car accident math 140 students’ text and drive? What proportion of the no car accident math 140 students’ text and drive? Do the proportions appear to be close or significantly different? What does this tell us about the relationship between texting and driving and car accidents?

  

Question 22

What proportion of the math 140 students both have a tattoo and prefer twitter?

  

Question 26

What proportion of the Instagram math 140 students have a tattoo? What proportion of the Facebook math 140 students have a tattoo? Do the proportions appear to be close or significantly different? What does this tell us about the relationship between social media and having a tattoo?

  

Question 30

What proportion of the cars have eight cylinders and are made in the U.S.?

  

Question 34

What proportion of the cars with six cylinders were made in the U.S.A? What proportion

of the cars with eight cylinders were made in the U.S.A? Are the proportions appear to be?

close or significantly different? What does this tell us about the relationship between cars?

made in the U.S.A and the number of cylinders?