Tim the tool man wants to build a bookshelf like the one shown here . it has three horizontal lengths , each 3 2 / 3 feet, and two vertical lengths each 2 5/8 feet. what is the total amount of wood necessary to build the shelves ?
a ( 15 1/4 ft
b ( 15 5/8 ft
c ( 16 1 / 4 ft
d ( 16 5 / 8 ft

Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?

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.)

Which of the following is not a subset of {1,2,3}?