Question: =+4.48 The average reading speed of students completing a speed-reading course is 450 words per minute (wpm). If the standard deviation is 70 wpm, find

=+4.48 The average reading speed of students completing a speed-reading course is 450 words per minute (wpm). If the standard deviation is 70 wpm, find the z score associated with each of the following reading speeds.

a. 320 wpm

c. 420 wpm

b. 475 wpm

d. 610 wpm

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