Interactive practice questions
A data set is approximately normally distributed. Let $x$x and $y$y be scores from the data set where $x$x has a $z$z-score of $2$2 and $y$y has a $z$z-score of $3$3.
Which event is more likely?
Randomly selecting a score in the dataset greater than $x$x.
Randomly selecting a score in the dataset greater than $y$y.
Which event is more likely?
Randomly selecting a score in the dataset less than $x$x.
Randomly selecting a score in the dataset less than $y$y.
A data set is approximately normally distributed. Let $x$x and $y$y be scores from the data set where $x$x has a $z$z-score of $2.03$2.03 and $y$y has a $z$z-score of $2.77$2.77.
A data set is approximately normally distributed. Let $x$x and $y$y be scores from the data set where $x$x has a $z$z-score of $-1$−1 and $y$y has a $z$z-score of $-2$−2.
A data set is approximately normally distributed. Let $x$x and $y$y be scores from the data set where $x$x has a $z$z-score of $-0.96$−0.96 and $y$y has a $z$z-score of $-0.21$−0.21.