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Normal Probability-Reading Speed

by | Dec 1, 2023 | Posted Questions

Normal Probability-Reading Speed

The reading speed of second grade students in a large city
is approximately normal, with a mean of 91 wpm and standard deviation of 10
wpm.

(a) What is the probability a randomly selected student in
the city will read more than 95 wpm?

(b) What is the probability that a random sample of 11
second grade students from the city results in a mean reading speed of 95 wpm

(c) What is the probability that a random sample of 22
second grade students from the city results in a mean reading rate of 95 wpm

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