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11 August, 16:03

A two-way frequency table is shown below that displays the relationship between age and preferred soft drink. We took a sample of 100 people and recorded the following results:

Cola Rootbeer Dr. Fizz Total

10-25 years 10 5 20 35

26-40 years 15 10 10 35

41-55 years 20 10 0 30

Total 45 25 30 100

What is the probability (rounded to the nearest whole percent) that a randomly selected person is 10 to 25 years old or prefers drinking rootbeer?

60%

55%

10%

5%

+3
Answers (1)
  1. 11 August, 17:05
    0
    AGE Cola Rootbeer Dr. Fizz Total

    10-25 years 10 5 20 35

    26-40 years 15 10 10 35

    41-55 years 20 10 0 30

    Total 45 25 30 100

    Probability that a randomly selected person is 10-25 years old or prefers drinking rootbeer

    Probability of 10-25 years old = 35/100 = 35%

    Probability of drinking rootbeer = 25/100 = 25%

    Probability of 10-25 years or perfers to drinking rootbeer

    = 35% + 25% = 60% 1st option
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