kah36
09.12.2019 •
Mathematics
The reading speed of second grade students in a large city is approximately normal, with a mean of 91 words per minute (wpm) and a standard deviation of 10 wpm. complete parts (a) through (e).a) what is the probability a randomly selected student in the city wil read more than 94 wpm? (round to 4 decimal places as needed)b) what is the probability that a random sample of 14 2nd grade students from the city results in a mean reading rate of more than 94 wpm? (round to 4 decimal places as needed)c) probability that a random sample of 28 2nd grade students from the city results in a mean reading rate of more than 94 wpm? (round to 4 decimal places as needed)d) what effect does increasing the sample size have on the probability? e) a teacher institued a new reading program at school. after 10 weeks in the program it was found that the mean reading speed of a random sample of 22 2nd grade students was 91.3 wpm. which of the two options explains the result? option 1: a mean reading rate of 91.3 wpm is unusual since the probability of obtaining a result of 91.3 or more is? option 2: a mean reading rate of 91.3 wpm is not unusual since the probability of obtaining 91.3 or more is?
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ur answer is-
$12.500Thanks Hope it helps :).