=====Mathematics 241 - Spring 2015=====

==== Homework ====

**Section 15.1**

Exercise Set A: 1, 2, 3, 4, 5, 6

Also:

  - Suppose a fair dice is rolled 600 times. Find the probability of rolling
     - exactly 100 sixes,
     - 100 or fewer sixes,
     - 100 or more sixes.
  - Suppose the probability that a certain type of light bulb will last more than 1000 hours is 0.3679. Suppose 100 such light bulbs are tested. Find the probability that
     - exactly 50 light bulbs last more than 1000 hours,
     - 50 or fewer light bulbs last more than 1000 hours,
     - 50 or more light bulbs last more than 1000 hours.

Answers:

1. a. 0.04366 b. 0.5267 c. 0.5170

2. a. 0.002136 b. 0.9974 c. 0.004714