Random assignment of participants to the various groups in an experiment makes it more likely that extraneous variables will impact the experiment. increases the probability that the groups are equivalent. is essential if you want to generalize your results to the population. is very difficult to do and is therefore not commonly done.

i can answer this question sweetie!

step-by-step explanation:

70.30

step-by-step explanation:

isaiah walks 3 miles due north, turns and then 5 miles due east. how far is he from his starting point?

a^2 + b^2 = c^2

let c = distance from starting point.

(3)^2 + (5)^2 = c^2

9 + 25 = c^2

34 = c^2

sqrt{34} = sqrt{c^2}

sqrt{34} = c

the answer to question 1 is -8, 28.

step-by-step explanation: