Fill in the blanks.

1. A __________ is the value of a statistic that estimates the value of a parameter.

2. The _______________ represents the expected proportion of intervals that will contain the parameter if a large number of different samples is obtained. It is denoted______________.

3. True or False: A 95% confidence interval for a population proportion with lower bound 0.45 and upper bound 0.51 means there is a 95% probability the population proportion is between 0.45 and 0.51.

4. The value za/2 represents the ______________ of the distribution.

5. As the level of confidence of a confidence interval increases, the margin of error ____________________ (increases/decreases).

6. As the sample size used to obtain a confidence interval increases, the margin of error _____________________ (increases/decreases)?