AP Stats Chapter 9 Review

• I
• II
• III
• I, II, and III

• B
• C
• D
• E

• B
• C
• D
• E

• B
• C
• D
• E

• B
• C
• D
• E

Which chi-squared test would be appropriate if we were to be measuring the difference in the proportion of MM colors, assuming that the proportion of all colors are equal?

• Chi-Squared Goodness of Fit

• Chi-Squared Test for Homogeneity

• Chi-Squared Test for Association

• Chi-Squared Test for Independence

When running a chi-squared GOF test and obtaining a p-value of 0.02, what would our conclusion be after finishing the test?

• Since our p-value is less than 0.05, we reject the Ho. We have convincing evidence that at least one of the proportions in the Ho is incorrect.

• Since our p-value is less than 0.05, we accept the alternate hypothesis. We have convincing evidence of the alternate hypothesis.

• Since our p-value is less than 0.05, we fail to reject the null hypothesis. We have convincing evidence that the null hypothesis proportions are true.

• Since our p value is less than 0.05, we accept the null hypothesis. There is no evidence that anything is different than what is stated in the null.

When determining the expected counts from a two way table, which formula should we use?

• (row total)(column total)/table total

• Number of categories minus 1

• row total minus 1

• column total minus 1

Which of the following is an appropriate null hypothesis for a chi-squared test for independence?

• There is no association between variable X and variable Y in our given population.

• There is an association between the two variables we are measuring.

• We have evidence of the two variables being connected

• p1=0

A random sample is taken between high school students on what their favorite type of cheese is and if they like cake or pie. Which chi-squared test would be appropriate here to determine if cheese and dessert preference are associated?

• Chi Squared Test for Independence

• Chi Squared Test for Homogeneity

• Chi Squared Test for Difference of Squares

• Chi Squared Goodness of Fit Test