34 laptops out out 116 computers

We are asked to simplify the ratio of 34 laptops out of 116 computers into the simplest form. The greatest common factor is 2. hence, we divide each number by 2. 34 divided by 2 is equal to 17 while 116 divided by to is equal to 58. Hence the answer to this problem is b. 17 laptops : 58 computers. 

No, because this is an observational study.

Step-by-step explanation:

The researchers found that the rate of leukemia for children near high-tension wires was higher than the rate for those not near high-tension wires.

So, the answer is No, the researchers cannot conclude that proximity with high-tension wires causes leukemia in children as this is only an observational study.

Observational study is that study where the researcher observes the effect of a risk factor, diagnostic test or treatment without trying to control who is or is not exposed to it.