# Question

Explain on the basis of the various rules of Exercises 2.5 through 2.9 why there is a mistake in each of the following statements:

(a) The probability that it will rain is 0.67, And the probability that it will rain or snow is 0.55. (b) The probability that a student will get a passing grade in English is 0.82, And the probability that she will get a passing grade in English And French is 0.86.

(c) The probability that a person visiting the SAN Diego Zoo will see the giraffes is 0.72, the probability that he will see the bears is 0.84, And the probability that he will see both is 0.52.

(a) The probability that it will rain is 0.67, And the probability that it will rain or snow is 0.55. (b) The probability that a student will get a passing grade in English is 0.82, And the probability that she will get a passing grade in English And French is 0.86.

(c) The probability that a person visiting the SAN Diego Zoo will see the giraffes is 0.72, the probability that he will see the bears is 0.84, And the probability that he will see both is 0.52.

## Answer to relevant Questions

Among the 78 doctors on the staff of a hospital, 64 carry malpractice insurance, 36 are surgeons, And 34 of the surgeons carry malpractice insurance. If one of these doctors is chosen by lot to represent the hospital staff ...A biology professor has two graduate assistants helping her with her research. The probability that the older of the two assistants will be absent on Any given day is 0.08, the probability that the younger of the two will be ...A bin contains 100 balls, of which 25 are red, 40 are white, And 35 are black. If two balls are selected from the bin without replacement, what is the probability that one will be red And one will be white? Suppose that in Vancouver, B ∪ C., the probability that a rainy fall day is followed by a rainy day is 0.80 And the probability that a sunny fall day is followed by a rainy day is 0.60. Find the probabilities that a rainy ...A certain college gives aptitude tests in the sciences and the humanities to all entering freshmen. If X and Y are, respectively, the proportions of correct answers that a student gets on the tests in the two subjects, the ...Post your question

0