omework: Homework #10 ore:D of 1 pt 8121-T e malkng spood of second grade studen
ID: 2926933 • Letter: O
Question
Explanation / Answer
Probability that randomly selected student in the city will readmore than 97 words per minute is 0.3773
Use excel command NORM.DIST(97,92,16,TRUE) then subtract it from 1.
If 100 different students were chosen from this population we would except 38 to read more than 97 words per minute.
Probability that a random sample of 10 second grade students from the city results in a mean reading rate more than 97 words per minute is 0.0377
If 100 independent sample of n = 10 students were chosen from this population we would expect 38 samples to have a sample mean reading rate of more than 97 words per minute.
a 100 independent samples of n = 20 students were chosen from this p9pulation we would expect 69 samples to have sample mean reading rate of less than 97 words per minute.
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