Question

Bob bought 40 gumboils from a quarter machine. The number of each flavor he got is shown in the table. If there are 140 gumboils remaining in the machine, what is a reasonable prediction for the number of cola flavored gumboils left?

Flavors: Amount:

Grape 4
Cherry 12
Cola 16
Orange 8

Answer 1

56 cola flavored gumboils

Explanation:

Bob's 40 count of gumballs has 16 cola gumballs

Therefore the probability of a gumball being cola based on the sample size of Bob's purchase = 16/40 = 2/5

There are 140 gumballs left in the machine so we can expect that, on an average, 2/5 of them should be cola gumballs

So number of cola gumballs left is expected to be 2/5 x 140 = 56

This is only a prediction based on Bob's sample of 40 cola gumballs

Answer 2

56 cola-flavored gumballs remaining