Suppose that the average reading speed of students completing a speed-reading course is 500 words per minute (wpm). If the standard deviation is 70 wpm, find the z score associated with each of the...

Suppose that the average reading speed of students completing a speed-reading course is 500 words per minute (wpm). If the standard deviation is 70 wpm, find the z score associated with each of the following reading speeds. (Round the answers to two decimal places.)

350 wpm



515 wpm



440 wpm



620 wpm