### Home > CCA2 > Chapter 11 > Lesson 11.2.4 > Problem 11-76

MINIATURE GOLF

Olivia loves playing putt-putt golf. In putt-putt golf you do not swing at a golf ball, but rather you only putt the golf ball (tap the ball with a club so that it rolls into a hole). Olivia experimented with her new club to determine whether or not she played better with it. Each time before she putted a golf ball, Olivia flipped a coin to determine whether she would use her new club or the old one. She experimented on

What is the difference in the proportions (new club minus old club)? Express your answer as a decimal.

Olivia needs a computer simulation to determine the sample-to-sample variability:

Out of the

putts, how many went into the hole? of of

A model of this situation needs to represent

putts. What will the numbers to represent? What will the numbers to represent? out of Olivia's putts went in the hole. Conduct one simulation of

putts. What proportion of the putts in your simulation went into the hole? What proportion did not go into the hole? What is the *difference*in the proportion (proportion that went into the hole minus proportion that did not go in)? Olivia ran the simulationtimes and calculated the *difference*in the proportion of putts that went into the hole and those that did not go into the hole for each simulation. From her results, she predicted the true*difference*in proportion of all her putts was. Using a graphing calculator, randlnt

. = a miss

What does a difference of zero mean in the context of this problem? Is a difference of zero a plausible result considering your margin of error?

The margin of error is from

to .

Iswithin the margin of error? Are you convinced that there is a true difference between the new club and the old club?

Look at your answer to part (c).

The difference in the two clubs is within the margin of error.

What does this indicate?