Ross needs to have a procedure done, and since he is over 65 he is on medicare. medicare says that according to their plan the allowed amount is 7 8 of what the doctor's office charges. of that allowed amount they will pay 5 6 , and ross will be out of pocket 1 6 .

I had this question on USATestprep, the answer is B) 2,057

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.

85.560%

step-by-step explanation:

conditional probability is defined as:

p(a|b) = p(a∩b) / p(b)

in other words, the probability that a occurs, given that b has occurred = the probability that both a and b occur / the probability that b occurs.

in this example:

p(turns 64 | turns 44) = p(turns 64 & turns 44) / p(turns 44).

if someone turns 64, they must have already turned 44, so:

p(turns 64 | turns 44) = p(turns 64) / p(turns 44)

on page 42, we see that of the original 100,000, 94944 turn 44, and 81234 turn 64.   therefore:

p(turns 64 | turns 44) = 81234 / 94944

p(turns 64 | turns 44) = 0.85560