Question

Suppose that 1 out of every 5 drivers come to a complete stop at an intersection having flashing red lights in all directions when no other cars are visible. 15 drivers approaching an intersection under these conditions will be randomly selected. Let Y be the count of these selected drivers that come to a complete stop.

Y has a binomial distribution where n = _____ and p = _____.

The possible values of Y are whole numbers from _____ to _____.

Find the following:

(The cumulative binomial table can be used to answer each question)

1. The probability at most 3 drivers will come to a complete stop.

Here, we seek: P(Y ) which equals

1. The probability that exactly 3 drivers will come to a complete stop.

Here, we seek: P(Y ) which equals

1. The probability more than 4 drivers will come to a complete stop.

Here, we seek: P(Y ) which equals

Answer 1