Question

Last week Band Boosters took a tally of sales at the concession stand at homecoming. When they went back to check their information they noticed that some of the information was missing.

1. How many people bought a hot dog and no drink?
2. How many people bought either a hot dog or a hamburger?
3. What percentage of the total sales drank either soda or water?
4. What is the relative frequency of the sales which include a hamburger but no drink? (Write in decimal form and do not round)
Create a relative frequency table using the information from question 1. Write your answers in decimal form."

Answer 1

To find the required information, we can use formulas and create a relative frequency table.

Step-by-step explanation:

1. To find how many people bought a hot dog and no drink, we need to subtract the number of people who bought a hot dog and a drink from the total number of people who bought a hot dog. Let's say that the number of people who bought a hot dog is A, and the number of people who bought a drink is B. The formula to find the number of people who bought a hot dog and no drink is A - (A ∩ B).

2. To find how many people bought either a hot dog or a hamburger, we need to add up the number of people who bought a hot dog and the number of people who bought a hamburger. Let's say that the number of people who bought a hot dog is C, and the number of people who bought a hamburger is D. The formula to find the number of people who bought either a hot dog or a hamburger is C + D.

3. To find the percentage of the total sales that drank either soda or water, we need to divide the number of sales that included soda or water by the total number of sales, and then multiply by 100. Let's say that the number of sales that included soda or water is E, and the total number of sales is F. The formula to find the percentage is (E / F) * 100.

4. To find the relative frequency of the sales that include a hamburger but no drink, we need to divide the number of sales that include a hamburger but no drink by the total number of sales. Let's say that the number of sales that include a hamburger but no drink is G, and the total number of sales is H. The formula to find the relative frequency is G / H.

Here is a relative frequency table for question 1:

Hot DogNo DrinkAG