Math Solutions

[Solution Library] Returning to the contingency table shown in problem 2 above, if one of the sample responses was randomly selected from the group of 100 responses,

Question: Returning to the contingency table shown in problem 2 above, if one of the sample responses was randomly selected from the group of 100 responses, determine the following probabilities:

Age Group 1:1-1.3:1 1.4:1 - 1.6:1 1.7:1-2:1
Teenage 2 6 10
Young Adults 5 10 12
Middle Aged 7 15 11
Seniors 5 6 11
  1. What is the probability that the randomly selected person was someone who preferred the 1:1 - 1.3:1 screen ratio given that they were in the teenage age group?
  2. What is the probability that the randomly selected person was a young adult and preferred the 1.421 - 1.6:1 screen ratio?
  3. What is the probability that the randomly selected person was someone who was middle aged or preferred the 1.4:1 - 1.6:1 screen ratio?
  4. What is the probability that the randomly selected person was a senior?

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