Jane is making reusable grocery bags and lunch bags. She needs 34yard of material to make a grocery bag. A lunch bag needs 23of the amount of material a grocery bag needs. How much material does she need to make a lunch bag?

x=half

step-by-step explanation:

0.02040816326

x equals 1

step-by-step explanation:

f(4)=f(×)

x=1

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