Asked by john
The times for completing one circuit of a bicycle course are normally distributed with a mean of 81.7 minutes and a standard deviation of 8.6 minutes. An association wants to sponsor a race and provide prizes for the top (that is, fastest) 15% of riders. Where should they expect to set the cutoff time to earn a prize?
Answers
Answered by
PsyDAG
Z = (score-mean)/SD
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion (.15) that correspond to a Z score. Insert Z score and other values into the above equation and solve for the score.
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion (.15) that correspond to a Z score. Insert Z score and other values into the above equation and solve for the score.
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