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Through a telephone survey, a low-interest bank credit card is offered to 400 households. The responses are as tabled.
a) Develop a joint probability table and show the joint and marginal probabilities.
b) What is the probability of a household whose income exceeds $40,000 and who rejects the offer?
c) If income is ≤ $40,000, what is the probability the offer will be accepted?
d) If the offer is accepted, what is the probability that income exceeds $40,000?
e) Are income and level and whether an offer is accepted independent? Explain.
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