You ask 120 randomly chosen students to name their favorite ice cream flavor. There are 1800 students in the school. Estimate the number of students in the school whose favorite ice cream flavor is chocolate chip.
The number of students in the school whose favorite ice cream flavor is chocolate chip is about how many??

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

htrhyjk

step-by-step explanation:

oiluiylkyuk4515kt

u65ku45kuyfr

on the middle line

step-by-step explanation:

1/5=50