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 A | Prefers Snack B | Total | |
---|---|---|---|
Has Eaten Snack A before | 144 | 92 | 236 |
Has Not Eaten Snack A before | 108 | 228 | 336 |
Total | 252 | 320 | 572 |
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 = .
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 = .
Since this probability is greater than 50%, the person is more likely to prefer Snack B.
Conclusions:
- Given a person who has eaten Snack A before, the customer will stay with Snack A.
- 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:
- What is the overall probability that a randomly selected person prefers Snack A?
- How would the probabilities change if more people who hadn't eaten Snack A started preferring it?
- What is the probability that a randomly selected person has not eaten Snack A before?
- How can you calculate the likelihood of preferring Snack B overall, without conditions?
- 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
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