Question

The table below shows the probability distribution of the types of food purchased by students from the school cafeteria. What is the probability a student has a purchased Caesar Salad?

FOOD: Pizza, Cheeseburger, Chicken Sandwich, Caesar Salad, Macaroni and cheese

Probability: 0.2, 0.45, 0.06, ?, 0.12

Answer 1

Probability always sums up to 1
P(pizza) + P(cheeseburger) + P( chicken sandwich) + P(caesar salad) + P(macaroni and cheese) = 1

let P(caesar salad) be x

0.2 + 0.45 + 0.06 + x + 0.12 = 1
x= 0.17