The reading speed of second grade students in a large city is approximately normal, with a mean of

90 words per minute (wpm) and a standard deviation of 10 wpm. Complete parts (a) through (f).

(f) There is a 5% chance that the mean reading speed of a random sample of

21 second grade students will exceed what value?To find this value, convert the normalized z-score that has an area of 0.05 in the right tail using the formula

z=xx over x.

First, determine the z-score with an area of 0.05 in the right tail, or 0.95 to the left, rounding to three decimal places.

There is a 5% chance that the mean reading speed of a random sample of 21 second grade students will exceed enter your response here wpm. (Round to two decimal places as needed.)