A manufacturer of tennis rackets has designed a new racket and would like to compare it to their previous design.Suggest an appropriate experiment.

Answers will vary.Obtain a group of volunteer tennis players of a similar standard.Assign volunteers at random to one of two groups.Group 1 will use the company's previous racket first and the new racket second.Group 2 will use the new racket first and the previous racket second.Each player will serve 100 times with each racket.The percentage of good serves with the two rackets will be compared.The players should be blinded to which racket they are using.Also,the person recording the percentage of good serves should be blinded to which racket the player is using.