SOLUTION: Hello, I have had this question a couple of times now and can't figure it out. Help Please!! Mrs. Smith's reading class can read a mean of 175 words per minute with a standard d

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Question 729657: Hello, I have had this question a couple of times now and can't figure it out. Help Please!!
Mrs. Smith's reading class can read a mean of 175 words per minute with a standard deviation of 20 words per minute. The top 3% of the class is to receive a special award. Assuming that the distribution of words read per minute are normally distributed, what is the minimum number of words per minute a student would have to read in order to get the award?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Mrs. Smith's reading class can read a mean of 175 words per minute with a standard deviation of 20 words per minute. The top 3% of the class is to receive a special award. Assuming that the distribution of words read per minute are normally distributed, what is the minimum number of words per minute a student would have to read in order to get the award?
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Find the z-value with a right tail of 3%.
|invNorm(0.03)| = 1.8808
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Find the corresponding wpm number using x = z*s + u
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wpm = 1.8808*20+175 = 213 when rounded up.
Cheers,
Stan H.