Confidence Intervals from Normal Distributions

Review, find z-scores that cut off the middle 90, 95, 99% of normal distribution -/+ 1.645, -/+ 1.960 -/+2.576 Given a point estimate and margin of error, calculate a confidence interval (easy) formula for a confidence interval, given the population standard deviation interpretation of a confidence interval examine increasing the sample size calculate the width and margin of error examine what happens when the confidence level is increased/decrease