(a) This probability model is A. continuous. B. discrete. C. equally likely. OD. None of the above. (b) The probability that a randomly chosen American has type AB blood must be A. 0.11 B. 0.2 C. 0.22 D. Any number between 0 and 1. (c) Maria has type B blood. She can safely receive blood transfusions from people with blood types O and B. What is the probability that a randomly chosen American can donate blood to Maria? A.0.31 B. 0.11 C. 0.58 D. None of the above.

In a particicular second hand store, 9 of the 42 cell phones sold will have some sort of a defect. If you randomly select two cell phones to purchase, what is the probability that BOTH of them have a defect?NOTE: this is a case of WITHOUT REPLACEMENT, since once you select one, that can't be chosen again for your second pick.(Give answer as a decimal correct to four decimal places.)probability =

A local bottling company has determined the number of machine breakdowns per month and their respective probabilities as shown below. Number of   Breakdowns Probability 0 .12 1 .38 2 .25 3 .18 4 .07 The probability of at least 3 breakdowns in a month is _____.   a. .30     b. .5     c. .10     d. None of these answers are correct.

Just need work shown. :)

The results for a test given by a certain instructor not in the School of Sciences by grade and gender follow.   A B C Total Male 20 5 6 31 Female 13 4 10 27 Total 33 9 16 58 Find the probability that a randomly selected student earned a grade of 'B' given that the student is male.

Suppose that the proportions of blood phenotypes in a particular population are as follows: A    B    AB    O 0.45    0.06    0.01    0.48 Assuming that the phenotypes of two randomly selected individuals are independent of one another, what is the probability that both phenotypes are O? (Enter your answer to four decimal places.)What is the probability that the phenotypes of two randomly selected individuals match? (Enter your answer to four decimal places.)

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Suppose that the proportions of blood phenotypes in a particular population are as follows: O A B AB 0.47 0.06 0.02 0.45 Assuming that the phenotypes of two randomly selected individuals are independent of one another, what is the probability that both phenotypes are O? (Enter your answer to four decimal places.) What is the probability that the phenotypes of two randomly selected individuals match? (Enter your answer to four decimal places.)

The following shows the probability distribution for blood types in the U.S. O O O C O 0.51 O 0.45 O 0.41 Blood Type Probability 0.86 O Here is some additional information: • A person with type A can donate blood to a person with type A or AB. • A person with type B can donate blood to a person with type B or AB. • A person with type AB can donate blood to a person with type AB only. • A person with type O can donate blood to anyone. What is the probability that a randomly selected person is a potential donor for a person with type A blood? 0.45 A 0.41 B 0.10 AB 0.04

A fair coin is flipped twice and the number of heads is counted. Which of the following is a valid probability model for the number of heads observed in two flips?  a. Number of tails: 0 1 2 Probability: 1/4 1/2 1/4 b. Number of tails: 0 1 2 Probaility: 1/3 1/4 1/4  c. Number of tails: 0 1 2 Probability: 1/3 1/2 1/3  d. None of the above