1. a person ordering a certain model of car choose any of 8 colors, either manual or automatic transmission, and any of 5 audio systems. how many ways are there to order this model of car?

2. choose the z-score satisfying the given condition that 3.0% of the total area is to the right of Z.

3. a company installs 5000 light bulbs, each with an average life of 500 hours. standard deviation of 100 hours, and distribution approximated by a normal curve. find the approximate number of bulbs that can be expected to last between 290 hours and 500 hours.