The two-way frequency table shows data on accidents in the last year for drivers who took a driver
safety course.
Driver Safety
Course
No Driver Safety
Course
Total
28
35
63
Accident within
the last year
No Accident
within the last
year
Total
97
104
201
125
139
264
Given that a driver took the driver safety course, what is the chance that the driver still got in an
accident? Round your answer to the nearest whole number.

the answer is a

step-by-step explanation:

because if you put 1 in to the square root of x it equals 300.

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

step-by-step explanation:

i'm pretty sure it would take 20 hours because it's half the men so you multiply the number of hours it takes by 2