AnswersPBCSD_Grade_Forgiveness_1207350_Mathematics_for_College_Liberal_Arts_S2_2023Introduction to Statistics — Unit testQuestion 2
2
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Introduction to Statistics — Unit test

Question 2 • PBCSD_Grade_Forgiveness_1207350_Mathematics_for_College_Liberal_Arts_S2_2023

One drive-through car wash facility offers three different types of washes: basic, deluxe, and supreme. The manager of the car wash facility tallies customer selections over three days. Type of Car Wash BasicDeluxeSupremeTotalDayFriday15431977Saturday275222101Sunday23451987 Total6514060265Given that a customer got their car washed on Friday, what is the probability that the customer selected the deluxe car wash?

Answer
A
16.2%
B
30.7%
C
52.8%
D
55.8%

Explanation

Among customers who visited on Friday, 43 selected the deluxe wash out of 77 total Friday customers. The conditional probability is 43 ÷ 77 ≈ 0.558, or 55.8%. Therefore, the correct choice is 55.8%.

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