1What term refers to the process of using a sample statistic to estimate a population parameter?
Estimation
2What term refers to an estimate using a single number from the sample to estimate the population parameter?
Point Estimate
3What term refers to a range of values within which the population likely falls?
Confidence Interval
4What term refers to the probability that the confidence interval contains the population parameter?
Confidence Level
5What term refers to the amount added to and subtractwd from the sample mean to build the interval? (+-Z(standard error))
Margin of Error
6Formula for Confidence Intervals
CI = y-bar +- Z(ó y-bar)
7Formula for CI when population SD is unknown
Y-bar +- Z(s / sqrtN)
8Formula for CI of proportions
p +- Z (sqrt((pi)(1-pi)/N))
9Formula for CI of proportions when population proportion is unknown
p +- Z (sqrt((p)(1-p)/N))
10If the sample size is large, how is the interval?
Precise
11What goals trade off?
Confidence and precision