Math Problem Statement

Select the correct answer from each drop-down menu.

Each participant tastes snack A and snack B and then chooses their favorite. Some participants have eaten snack A before and some have not. The results of the test are shown in a table. Using the data in a table, the company that makes snack A calculates probabilities related to a random selected person.

Prefers Snack APrefers Snack BTotalHas Eaten Snack A before

144

92

236

Has Not Eaten Snack A before

108

228

336

Total

252

320

572

Complete the conclusions based on the data in the table.

Given a person who has eaten snack A before, the customer will stay with snack Achange to snack B.

Given a person who has not eaten snack A before, the customer will want to eat snack AB.

Solution

Let's interpret the table and calculate the relevant probabilities based on the given data.

Prefers Snack APrefers Snack BTotal
Has Eaten Snack A before14492236
Has Not Eaten Snack A before108228336
Total252320572

1. Given a person who has eaten snack A before:

We want to determine the likelihood that they stay with Snack A or change to Snack B.

  • The total number of people who have eaten Snack A before is 236.
  • Out of those, 144 prefer Snack A (i.e., they stay with Snack A).
  • The probability of staying with Snack A = 144236\frac{144}{236}.

Since this probability is greater than 50%, the person is more likely to stay with Snack A.

2. Given a person who has not eaten snack A before:

We want to find out if they prefer Snack A or Snack B.

  • The total number of people who have not eaten Snack A before is 336.
  • Out of those, 108 prefer Snack A, while 228 prefer Snack B.
  • The probability of preferring Snack B = 228336\frac{228}{336}.

Since this probability is greater than 50%, the person is more likely to prefer Snack B.

Conclusions:

  1. Given a person who has eaten Snack A before, the customer will stay with Snack A.
  2. Given a person who has not eaten Snack A before, the customer will want to eat Snack B.

Let me know if you want any further details or calculations!


Here are 5 related questions:

  1. What is the overall probability that a randomly selected person prefers Snack A?
  2. How would the probabilities change if more people who hadn't eaten Snack A started preferring it?
  3. What is the probability that a randomly selected person has not eaten Snack A before?
  4. How can you calculate the likelihood of preferring Snack B overall, without conditions?
  5. Can we predict future snack preferences based on this data?

Tip: When calculating conditional probabilities, always focus on the specific group in question, rather than the total population.

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Math Problem Analysis

Mathematical Concepts

Probability
Conditional Probability
Data Interpretation

Formulas

Conditional Probability: P(A|B) = P(A and B) / P(B)
Simple Probability: P(A) = favorable outcomes / total outcomes

Theorems

Law of Total Probability
Conditional Probability Theorem

Suitable Grade Level

Grades 9-12