What proportion of z-values are expected to be less than -0.20 or greater than 1.90? Your answer should be out to four decimal places.
What proportion of z-values are expected to be between -1.50 and 0.80? Your answer should be out to four decimal places.
What proportion of z-values are expected to be between 0.30 and 0.80? Your answer should be out to four decimal places.