Hospital floors are usually covered by bare tiles. carpets would cut down on noise but might be more likely to harbor germs. to study this possibility, investigators randomly assigned 8 of 16 available hospital rooms to have carpet installed. the others were left bare. later, air from each room was pumped over a dish of agar (a gelatinous substance obtained from various kinds of red seaweed and used in biological culture media). the dish was incubated for a fixed period, and the number of bacteria colonies were counted. the response variable in this experiment is

Given the details of the study carried

out on Hospitals to study the possibility that carpers might be more likely to harbor

germs, in which air from rooms with carpet and those without carpet was pumped over a

dish of agar, and the number of bacteria colonies were counted after incubating

the dish for a fixed period of time. The response in this study is number of bacteria colonies in a dish.

the ratio of white tiles to blue tiles is 48: 16. the ratio in it's simplest form is 3: 1.

step-by-step explanation:

ratio: take the first number and add a colon next to it, then add the second number after that. make sure the ratio order matches up with the written problem!

simplest form: we can simplify the ratio 48 : 16 by dividing both terms by the greatest common factor (gcf).

the gcf of 48 and 16 is 16.

divide both terms by 16:

48 ÷ 16 = 3

16 ÷ 16 = 1

reducing to simplest form:

48 : 16 = 3 : 1