of the balloons recently sold by a party store, 4 were purple and 8 were other colors. considering this…
of the balloons recently sold by a party store, 4 were purple and 8 were other colors. considering this data, how many of the next 66 balloons sold would you expect to be purple? balloons
Answer
Explanation:
Step1: Calculate the proportion of purple balloons
The total number of balloons sold initially is $4 + 8=12$. The proportion of purple balloons is $\frac{4}{12}=\frac{1}{3}$.
Step2: Calculate the expected number of purple balloons
We expect the same proportion to hold for the next 66 - balloon sale. So the expected number of purple balloons is $\frac{1}{3}\times66 = 22$.
Answer:
22