Question

Lisa is in charge of planning a reception for 3600 people. She is trying to decide which snacks to buy. She has asked a random sample of people who are coming to the reception what their favorite snack is. Here are the results.

Favorite Snack Number of People



Brownies 32



Cookies 22



chips 56



other 65



Based on the above sample, predict the number of the people at the reception whose favorite snack will be chips. Round your answer to the nearest whole number. Do not round any intermediate calculations.

Answer 1

The expected number of the people at the reception whose favorite snack will be chips is 1152

Explanation:

Given

The data in the above table and

Reception = 3600

Required

Predict the number of the people at the reception whose favorite snack will be chips.

The first step is to determine the total number of samples;

`Total = Brownies + Cookies + Chips + Other`

`Total = 32 + 22 + 56 + 65`

`Total = 175`

The next step is to determine the fraction of people whose favorite is chips

`Fraction = (Chips)/(Total)`

`Fraction = (56)/(175)`

The product of the above fraction and the expected number of people in the reception is the solution to this question;

`Expected\ Number = (56)/(175) * 3600`

`Expected\ Number = (56* 3600)/(175)`

`Expected\ Number = (201600)/(175)`

`Expected\ Number = 1152`

Hence, the expected number of the people at the reception whose favorite snack will be chips is 1152