CHAPTER 1

EXERCISE:

A. Identify each item as being discrete or continuous

_____ 1. Among the 50 installed computers in the laboratory, 14 are not working

_____ 2. The square root of an integer X.

_____ 3. In tossing a die, the possibility of each outcome.

_____ 4. The varying speed of typhoon Yoling in a day

_____ 5. The operation was complete in 3 hours and 15 minutes

_____ 6. ATM numbers

_____ 7. Speed of Beta particles.

_____ 8. f(x)=1

____ 9. Among the 24 senators, 20 voted yes, 3 voted no and 1 abstained

____ 10. All rational numbers.

B. Expand the following:

5

1.X_i Y_i

I = 1

4

2.(X_i + Y_i)

I =1

3

3. (X_i - 5)

I = 1