What is the probability, If a household is known to have an

What is the probability

Reference no: EM131404063

The following relative frequency distribution describes the household incomes for families living in a suburban community:

Income	Relative Frequency
Less than $20,000	0.10
$25,000-under $40,000	0.20
$40,000-under $60,000	0.30
$60,000-under $80,000	0.25
$80,000 or more	0.15

a. For a randomly selected household, what is the probability that its annual income is less than $80,000?

b. If a household is known to have an income of at least $20,000, what is the probability that its annual income is in the $60,000-under $80,000 category?

c. Two households are randomly selected from those whose income is at least $40,000 per year. What is the probability that both of these households are in the $80,000 or more category?

Reference no: EM131404063

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