Racheal brought chocolate and vanilla to school for her birthday.80 students decided to take a cupcake and 56 of them took vanilla. what percentage of students picked vanilla.

70%

Step-by-step explanation:

56 vanilla cupcakes

= 0.7, or 0.7(100%), or 70%

     80 students

70% of students picked vanilla.

idkit the do u know da way and ligma consumed ninja

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