A restaurant owner has found that 80% of her customers return to the restaurant within two weeks. She wants to create a tool that will simulate the habits of her customers and allow her to predict the probability that three of the next four customers to visit her restaurant will return within two weeks.

Question

A restaurant owner has found that 80% of her customers return to the restaurant within two weeks. She wants to create a tool that will simulate the habits of her customers and allow her to predict the probability that three of the next four customers to visit her restaurant will return within two weeks.

Which spinner simulation uses an appropriate device and has the correct number of trials?
a spinner divided into 5 congruent sectors, spun 3 times
a spinner divided into 5 congruent sectors, spun 4 times
a spinner divided into 2 congruent sectors, spun 3 times
a spinner divided into 2 congruent sectors, spun 4 times

Answer 1

The most appropriate spinner simulation for this scenario would be: a spinner divided into 2 congruent sectors, spun 4 times. This is because the restaurant owner has found that 80% of her customers return within two weeks, so the spinner should be divided into 2 sectors representing returning customers (80%) and non-returning customers (20%). Spinning the spinner 4 times would simulate predicting the probability that three out of the next four customers will return.