Which of the following choices is the variance of the sample shown here? 30, 32, 47, 57, 66,79
A. 19.2
B. 205.5
C. 17.6
D. 371.8
E. 309.2

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

1/4 of a pint hope that mark as brainliest

the first domain and range set to the left is matched with the top relation, and the second set the set in the middle goes with the bottom relation.