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Ensure you show all formulas and state values of variables, substitute and solve.
Provide a concluding statement for all parts.
Suppose that 31% of families in town own iPads. If sixteen families are surveyed at random,
Determine the probability that exactly 4 families own an IPAD. (3 marks)
Determine the probability that less than 3 families own iPads. (3 marks)
Determine the probability that least 3 families own iPads. (3 marks)
Determine the expected number of families with an iPad. (2 marks)
There are ten cats and eleven dogs in a pet shop. Nine pets are chosen at random to visit a children’s hospital.
Determine the probability that exactly three of the pets will be dogs. (3 marks)
Determine the probability that less than 2 of the pets will be dogs. (3 marks)
Determine the probability that at least 2 of the pets will be dogs. (3 marks)
Determine the expected number of dogs chosen. (2 marks)
Determine the probability that less than 3 families own iPads. (3 marks)
Determine the probability that least 3 families own iPads. (3 marks)
Determine the expected number of families with an iPad. (2 marks)

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