A) if it takes 125 chinchillas to make a coat and he needs to make 10 coats, how many chinchillas must barton have by the end of two years?
b) if barton and kirby started with 500 chinchillas and had 933 at the end of 12 months, what is the particular equation for the growth of the chinchilla population?
c) at this rate, how many chinchillas would they have at the end of two years?

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

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step-by-step explanation: