Multiple choice

In a survey of smartphone usage, 600 randomly selected adults were asked how often they use social media. The table below summarizes the data: Usage Frequency Male Female Total Daily 150 180 330 Occasionally 90 60 150 Rarely 50 70 120 Total 290 310 600 If one of the 600 adults is selected at random, what is the probability that the person uses social media daily?

  1. 1/20

  2. 7/15

  3. 9/20

  4. 11/20
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Total adults = 600. Total who use social media daily = 330. Probability = 330 / 600 = 33 / 60 = 11 / 20.

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