# Question: Shoppers can pay for their purchases with cash a credit

Shoppers can pay for their purchases with cash, a credit card, or a debit card. Suppose that the proprietor of a shop determines that 60% of her customers use a credit card, 30% pay with cash, and the rest use a debit card.

a. Determine the sample space for this experiment.

b. Assign probabilities to the simple events.

c. Which method did you use in part (b)?

a. Determine the sample space for this experiment.

b. Assign probabilities to the simple events.

c. Which method did you use in part (b)?

## Answer to relevant Questions

Refer to Exercise 6.11.a. What is the probability that a customer does not use a credit card?b. What is the probability that a customer pays in cash or with a credit card?Refer to Exercise.a. Determine P(A1∣B1).b. Determine P(A2∣B1).c. Did your answers to parts (a) and (b) sum to 1? Is this a coincidence? Explain.Refer to Exercise 6.24.a. Compute P(A1 or A2).b. Compute P(A2 or B2).c. Compute P(A3 or B1)A financial analyst has determined that there is a 22% probability that a mutual fund will outperform the market over a 1-year period provided that it outperformed the market the previous year. If only 15% of mutual funds ...In a four-cylinder engine there are four spark plugs. If any one of them malfunctions, the car will idle roughly and power will be lost. Suppose that for a certain brand of spark plugs the probability that a spark plug will ...Post your question