Confounding is a technique in which a subject doesn't know whether he or she is receiving a treatment or a placebo.
occurs in an experiment when you are not able to distinguish among the effects of different factors.
is the repetition of an experiment on more than one subject.
is used when subjects are assigned to different groups through a process of random selection.

answer: the value should be used for i in the formula of calculation the monthly payment , the interest rate per period is 0.85.

step-by-step explanation:

the given rate of interest i= 85%

in calculating the monthly payment for a loan with an interest rate compounded monthly, the value of the interest rate per period we use in the formula must be in decimal form.

to convert it in decimal, we divide it by 100, we get

hence, the value should be used for i in the formula of calculation the monthly payment , the interest rate per period is 0.85.

answer: asdfghjkl,mnbv

step-by-step explanation: