Asked by Aditi
mean = 60 wpm
standard deviation= 15 wpm
a.What is the probability that a randomly selected typist's net rate is at most 60 wpm? less than 60 wpm?
b. What is the probability that a randomly selected is between 45 and 90 wpm?
standard deviation= 15 wpm
a.What is the probability that a randomly selected typist's net rate is at most 60 wpm? less than 60 wpm?
b. What is the probability that a randomly selected is between 45 and 90 wpm?
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 proportions/probabilities related to the Z scores.
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions/probabilities related to the Z scores.
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