If the sample proportions were p1 = 12/50 and p2 = 18/50, the 95 percent confidence interval for the difference of the population proportions is approximately:

a) [-.011, +.214].
b) [-.144, +.244].
c) [-.120, +.120].
d) [-.298, +.058].

1. isolate the variable, in this case, d. subtract 35.5 on both sides of the equation.2. 52 subtracted by 35.5 is 16.53. therefore your answer would be d= 16.5this is the basics of pre algebra, isolating variable through adding, subtracting, multiplying, and dividing, if you have any other questions to ask just comment!

Ugh h h t t u i i vick u