Math Problem Statement
Four hundred consumers are surveyed about a new brand of snack food, Crunchicles. Their age groups and preferences are given in the table. 18–24 25–34 35–55 55 and over Total Liked Crunchicles 14 17 22 48 101 Disliked Crunchicles 26 43 14 70 153 No Preference 7 10 8 121 146 Total 47 70 44 239 400
One consumer from the survey is selected at random. Leave all answers in a reduced fraction. What is the probability that the consumer is 18–24 years of age, given that he/she dislikes Crunchicles?
What is the probability that the selected consumer dislikes Crunchicles?
What is the probability that the selected consumer is 35–55 years old or likes Crunchicles?
If the selected consumer is 70 years old, what is the probability that he/she likes Crunchicles?
Solution
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Math Problem Analysis
Mathematical Concepts
Conditional Probability
Probability Rules
Union of Events
Formulas
P(A | B) = P(A and B) / P(B)
P(A or B) = P(A) + P(B) - P(A and B)
Theorems
Conditional Probability Theorem
Addition Rule for Probability
Suitable Grade Level
Grades 9-12
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