AnswersTN-Mathematical Reasoning for Decision Making SupplementComparing Two Categorical Variables — Unit testQuestion 15
15
QuizMultiple Choice

Comparing Two Categorical Variables — Unit test

Question 15 • TN-Mathematical Reasoning for Decision Making (Supplement)

An arena manager tallies the number of snack items (hot dogs, nachos, and popcorn) sold at each of three concession stands in the arena. Snack Item Hot DogsNachosPopcornTotalConcessionStandsStand A1256540230Stand B21811952389Stand C655213130 Total408236105749What is the probability that a customer purchased popcorn, given that they purchased from stand B?

Answer
A
6.9%
B
13.4%
C
14.0%
D
49.5%

Explanation

Given that the customer purchased from stand B, use stand B’s total of 389 items as the denominator. Stand B sold 52 popcorns, so the probability is 52 ÷ 389 ≈ 0.134, or 13.4%. The correct choice is 13.4%.

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