FIGURE 8-
A 95% Confidence Interval, Part I
To begin calculating a confidence interval for a z distribution, we draw a normal curve, place the sample mean at its center, and indicate the percentages within and beyond the confidence interval.
A 95% Confidence Interval, Part I
To begin calculating a confidence interval for a z distribution, we draw a normal curve, place the sample mean at its center, and indicate the percentages within and beyond the confidence interval.