The reading speed of second grade students is approximately normal, with the mean of 85 words ...
guru2009 (Not rated)
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The reading speed of second grade students is approximately normal, with the mean of 85 words per minute and a standard deviation of 9 wpm. a.) what is the probability that a random sample of 25 second grade students results in the mean reading rate of more than 90 wpm. B.) there is a 10% chance that the mean reading speed of a random sample of 25 second grade students will exceed what value?
8 years ago
μ = 85, σ = 9, n = 25, x-bar = 90 ...
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