1) If city council wanted to determine how per capita income might be a predictor of crime rate, what statistical method would be most appropriate.

a. Continuous probability distribution

b. Confidence interval

c. Hypothesis test

d. Regression analysis

2) A consumer group feels that the average person spends less than 5 dollars each month on tooth care products. They decide to use hypothesis testing to see if they are right. Which of the following would be the alternative hypothesis?

a. Ha: > 5

b. Ha: 5

c. Ha: 5

d. Ha: < 5

3) A scientist has come up a new fertilizer for roses. She feels that with the use of this fertilizers, the average blooming time span for a rose will be no more than 55 days? You don't agree with the scientist. Which of the following would be the alternative hypothesis to test your claim?

a. Ha: < 55

b. Ha: 55

c. Ha: 55

d. Ha: > 55