To reduce laboratory costs, water samples from five public swimming pools are combined for one test for the presence of bacteria. further testing is done only if the combined sample tests positive. based on past results, there is a 0.004 probability of finding bacteria in a public swimming area. find the probability that a combined sample from five public swimming areas will reveal the presence of bacteria. is the probability low enough so that further testing of the individual samples is rarely necessary

77

step-by-step explanation:

hi! i think the answer is 1/2 : )

a.) list the factors of 40.

1/2/4/5/8/10/20/40

b.) list the factors of 40 that represent the number of cans that could be on each shelf.

5

c.) how many different arrangements of cans are possible?

just one because if you put more on one shelf you will go way over 40 and the cabinet will probably break.

d.) what are the possible arrangements of the cans?

put 5 cans on each self to reach 40 cans in total.

e.) which arrangement uses all the shelves?

5 because you can put 5 cans on each shelf, and since there are 8 shelfs you are equally going to get 40 cans.

step-by-step explanation: