True or False

1. Let A be an event associated with sample space S. Let A^c be the complement of A. Then P(A)+P(A^c).

2. The area to the left of the mean of the standard normal curve is equal to 0.5.

3. If A and B are mutually exclusive events in a sample space then P (A and B) = 0

4. The area under the normal curve drawn with regard to the population parameters is the same as the probability that a randomly selected individual of a population has these characteristics.

5. A continuous random variable has a finite or countable number of values.

6. Suppose that an experiment assigns the following probabilities to a sample space: P(A) 0.2 and P(B) 0.3 then P(A^C) 0.8. (A^c be the complement of A.)

7. A sample statistic is unbiased if the mean of its sampling distribution equals the value of the parameter being estimated.