Question

With Children

A restaurants tracks the number of tables served over the course of 4 days and
whether those tables included children and if a dessert was ordered at that table.
The results are shown.
What is the probability that a randomly selected order has no children or did order
dessert?
Enter your answer as a decimal rounded to the nearest hundredth.

Answer 1

The probability that a randomly selected order has no children or ordered dessert is 0.425, rounded to the nearest hundredth.

Using the following formula:

P(No children or dessert) = P(No children) + P(Ordered dessert) - P(No children and ordered dessert)

Now, substitute these values into the formula:

P(No children or dessert) =
`(55)/(200) + (50)/(200) - (20)/(200)`

Calculate each term:

P (no children or dessert) = 0.275 + 0.25 - 0.1

P(No children or dessert) = 0.425

So, the probability that a randomly selected order has no children or ordered dessert is 0.425, rounded to the nearest hundredth.