Which of the following is true about all Normal distributions? O The points at which the curvature changes from "up" to "down" (the points of inflection) are at the first and third quartiles of the distribution
There is no area under the curve for Z-scores greater than 3.49.
O The area underneath the curve is equal to 1
About 68% of the values of the variable are more than one standard deviation away from the mean.
The mean is usually greater than the median.