Sue either travels by bus or walks when she visits the shops. The probability that she catches the bus TO the shops is 0.4. The probability that she catches the bus FROM the shops is 0.7

a) complete the tree diagram

b) show that the probability that Sue walks at least one way is 0.72

4. find the geometric mean of 4 and 12. 24 8

The accompanying table shows the numbers of male and female students in a particular country who received bachelor's degrees in business in a recent year. complete parts (a) and (b) below. business degrees nonbusiness degrees total male 189131 634650 823781 female 169539 885329 1054868 total 358670 1519979 1878649 (a) find the probability that a randomly selected student is male, given that the student received a business degree. the probability that a randomly selected student is male, given that the student received a business degree, is nothing. (round to three decimal places as needed.) (b) find the probability that a randomly selected student received a business degree, given that the student is female. the probability that a randomly selected student received a business degree, given that the student is female, is nothing. (round to three decimal places as needed.)

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