1 of 6

12.2 Conditional Probability

2 of 6

3 of 6

4 of 6

5 of 6

Applying Shampoo

6 of 6

A student in Buffalo, New York, made the observations below.

​

Of all snowfalls, 5% are heavy (at least 6 in.)

After a heavy snowfall, schools are closed 67% of the time.

After a light (< 6in.) snowfall, schools are closed 3% of the time.

​

Find the probability that the snowfall is light and the schools are open.

​

Find P(schools open, given heavy snow)