Agroundskeeper is tasked with fertilizing the grass of a triangular courtyard. to determine how much fertilizer he should buy, he must know the area of the courtyard. the owner informs the groundskeeper that the base of the courtyard is ì90 meters and the height of the courtyard is 10+ì3meters. what is the area of the courtyard? (recall that the area of a triangle is , where b is the base and h is the he

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