Only 4% of people have Type AB blood. a) On average, how many donors must be checked to find someone with Type AB blood? b) What’s the probability that there is a Type AB donor among the first 5 people checked? c) What’s the probability that the first Type AB donor will be found among the first 6 people? d) What’s the probability that we won’t find a Type AB donor before the 10th person?

Only 4% of people have Type AB blood. What's the probability that we won't find a Type AB donor before the 10th person?

Raaj works at the customer service call center of a major credit card bank. Cardholders call for a variety of reasons, but regardless of their reason for calling, if they hold a platinum card, Raaj is instructed to offer them a double-miles promotion. About 10% of all cardholders hold platinum cards, and about 50% of those will take the double-miles promotion. On average, how many calls will Raaj have to take before finding the first cardholder to take the doublemiles promotion?

Just before a referendum on a school budget, a local newspaper polls 400 voters in an attempt to predict whether the budget will pass. Suppose that the budget actually has the support of 52% of the voters. What’s the probability the newspaper’s sample will lead them to predict defeat? Be sure to verify that the assumptions and conditions necessary for your analysis are met.

List the different blood types in the ABO blood group. Be sure to note which type is the “universal donor” and which type is the “universal recipient.” Fill in the blanks.

The two major antigens on the cell surface are antigen A and antigen B.

A person with only antigen B has type blood ____________.

Only 4% of people have Type AB blood.

On average, how many donors must be checked to find someone with Type AB blood?

Suppose a computer chip manufacturer rejects 2% of the chips produced because they fail presale testing. What's the probability that the fifth chip you test is the first bad one you find?

Suppose a computer chip manufacturer rejects 2% of the chips produced because they fail presale testing. What's the probability you find a bad one within the first 10 you examine?

Suppose a computer chip manufacturer rejects 2% of the chips produced because they fail presale testing. a) What’s the probability that the fifth chip you test is the first bad one you find? b) What’s the probability you find a bad one within the first 10 you examine?

A basketball player has made 80% of his foul shots during the season. Assuming the shots are independent, find the probability that in tonight's game he misses for the first time on his fifth attempt.

A basketball player has made 80% of his foul shots during the season. Assuming the shots are independent, find the probability that in tonight's game he makes his first basket on his fourth shot.

A basketball player has made 80% of his foul shots during the season. Assuming the shots are independent, find the probability that in tonight’s game he a) misses for the first time on his fifth attempt. b) makes his first basket on his fourth shot. c) makes his first basket on one of his first 3 shots.

About 8% of males are colorblind. A researcher needs some colorblind subjects for an experiment and begins checking potential subjects. What's the probability that she won't find anyone colorblind among the first 4 men she checks?

A basketball player has made 80% of his foul shots during the season. Assuming the shots are independent, find the probability that in tonight's game he makes his first basket on one of his first 3 shots.