At a pizza shop, 80% of the customers order a pizza, 15% of the customers order a salad, and 10% of the customers order both a pizza and a salad.If a customer is chosen at random, what is the probability that he or she orders either a pizza or a salad?A.0.65B.0.12C.0.95D.0.85
Question
At a pizza shop, 80% of the customers order a pizza, 15% of the customers order a salad, and 10% of the customers order both a pizza and a salad.If a customer is chosen at random, what is the probability that he or she orders either a pizza or a salad?A.0.65B.0.12C.0.95D.0.85
Solution
The probability of a customer ordering either a pizza or a salad can be found by adding the probability of a customer ordering a pizza to the probability of a customer ordering a salad, and then subtracting the probability of a customer ordering both.
The probability of a customer ordering a pizza is 0.80 (or 80%), the probability of a customer ordering a salad is 0.15 (or 15%), and the probability of a customer ordering both is 0.10 (or 10%).
So, the probability of a customer ordering either a pizza or a salad is 0.80 + 0.15 - 0.10 = 0.85 (or 85%).
Therefore, the answer is D. 0.85.
Similar Questions
At a certain pizza parlor, 50% of the customers order a pizza containing onions, 49% of the customers order a pizza containing sausage, and 61% order a pizza containing onions or sausage (or both). Find the probability that a customer chosen at random will order a pizza containing both onions and sausage.Write your answer as a decimal
At a certain fast-food restaurant, 63% of customers order a chicken sandwich, 43% of customers order french fries, and 32% of customers order both a chicken sandwich and french fries. What is the probability that a randomly selected customer will order a chicken sandwich or french fries (or both items)?2 points0.650.690.740.83
At a gas station, 84% of customers buy gasoline, 9% of customers buy gasoline and a beverage, and 5% of customers buygasoline and a snack.a. What is the probability that a customer who buys gasoline also buys a beverage? Express your first answer as a simplified fraction and your percent answer rounded to the tenths place. , or about $\%$%b. What is the probability that a customer who buys gasoline also buys a snack? Express your first answer as a simplified fraction and your percent answer rounded to the tenths place. , or about $\%$
A taste test asks people from Texas and California which pasta they prefer, brand A or brand B. This table shows the results.A person is randomly selected from those tested.What is the probability that the person is from California, given that the person prefers brand A? Round your answer to two decimal places.A.0.60B.0.55C.0.53D.0.62
In a large restaurant, an average of 2 out of every 5 customers ask for water with their meal. A random sample of 10 customers is selected.Calculate the probability taht exact 8 customers ask for water with their meal. Enter your answer as a decimal rounded to 4 decimal places.
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.