A farmer in China discovers a mammal hide that contains 30% of its original
amount of C-14.
Enter the correct answer.
N = Noekt
DONE
No - inital amount of C-14 (at time
t=0)
N = amount of C-14 at time t
k = 0.0001
t-time, in years

the answer i think is a)

step-by-step explanation:

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

x:       y:  

-1         4

0         4

1         6

2         18

3         20