19. People were surveyed and asked how many TVs are in their household. Here are the results: 1 2 3 4 Frequency P(x) 11 44 35 18 12 Here x is the number of TVs and the frequency is the number of people who have x TVs. a) Fill in that last row of probabilities, using the fact that P(x) is the relative frequency of x. Leave the probabilities as decimals. Hint: first you will need to calculate the total number of people who were surveyed. b) Find the average number of TVs per household by applying the formula µ = ExP(x). This means that you should multiply each x value by its corresponding P(x) value, and then add up the results.

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