To investigate how often families eat at home, Harris Interactive surveyed 496 adults living with children under the age of 18 (USA Today, January 3, 2007). The survey results are shown in the following table.

For a randomly selected family with children under the age of 18, compute the following.
a. The probability the family eats no meals at home during the week.
b. The probability the family eats at least four meals at home during the week.
c. The probability the family eats two or fewer meals at home during the week.

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Number of Family Meals per Week Number of Survey Responses 119 7 or more