25
QuizMultiple Choice

Unit Test — Unit test

Question 25 • Probability and Statistics with Applications Honors Sem-2-FL-1210300 (2024-2025)

A recent survey suggests that 47% of all televisions are connected to the internet, 32% are voice controlled, and 22% are both connected to the internet and voice controlled. Suppose a television is selected at random and it is voice controlled. What is the probability that a randomly selected voice-controlled television is also connected to the internet?

Answer
A
0.15
B
0.47
C
0.69
D
0.79

Explanation

Use conditional probability: among voice-controlled televisions, the fraction that are also connected to the internet is the percentage that are both divided by the percentage that are voice controlled. Calculate 0.22 ÷ 0.32 = 0.6875, which rounds to 0.69. The correct choice is 0.69.

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