If we want to understand what role a person's experience plays in the salary that he/she gets, which statistical method would be most appropriate?

Group of answer choices

Confidence interval

Regression analysis

Binomial distribution

Hypothesis test

A consumer group feels that the average person spends more than 10 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?

Ha: = 10

Ha: < 10

Ha: 10

Ha: > 10

A scientist has come up a new fertilizer for roses. She feels that with the use of this fertilizers, the average blooming time span will increase. But she feels the time span will still be 55 days or more. You don't agree with the scientist. Which of the following would be the alternative hypothesis to test your belief?

Ha: 55

Ha: > 55

Ha: 55

Ha: < 55