What is the "base" given the part of $12,495 and a percent decrease of 30%??? Topic is "finding the base". Please help! I already did the quiz but it doesn't show me the answers, all I know is I got it wrong but idk how to solve it because it doesn't let me check the answers.

$416.5

Step-by-step explanation:

12,495 divided by 30 equals 416.5

the line of

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