Amanufacturing firm claims that the batteries used in their electronic games will last an average of 30 hours. to maintain this average,16 batteries are tested each month. if the computed t value falls between t−0.025 and t0.025, the firm is satisfied with its claim. a. find the p(x¯) using excel. b. try to estimate the value of p(x¯ > 30) using t table.

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.)