I school. After 10 weeks in the program, it was found that the mean reading speed of a random sample of 21 second grade students was 91.8 wpm. What might you conclude based on this result? (e) A teacher instituted a new reading program Select the correct choice below and fill in the answer boxes within your choice. (Type integers or decimals rounded to four decimal places as needed.) O A. A mean reading rate of 91.8 wpm is unusual since the probability of obtaining a result of 91.8 wpm or more is. This means that we would expect a mean reading rate of 91.8 or higher from a population whose mean reading rate is 89 in of every 100 random samples of size n=21 students. The new program is abundantly more effective than the old program. O B. A mean reading rate of 91.8 wpm is not unusual since the probability of obtaining a result of 91.8 wpm or more is . This means that we would expect a mean reading rate of 91.8 or higher from a population whose mean reading rate is 89 in of every 100 random samples of size n =21 students. The new program is not abundantly more effective than the old program. (f) There is a 5% chance that the mean reading speed of a random sample of 21 second grade students will exceed what value?
I school. After 10 weeks in the program, it was found that the mean reading speed of a random sample of 21 second grade students was 91.8 wpm. What might you conclude based on this result? (e) A teacher instituted a new reading program Select the correct choice below and fill in the answer boxes within your choice. (Type integers or decimals rounded to four decimal places as needed.) O A. A mean reading rate of 91.8 wpm is unusual since the probability of obtaining a result of 91.8 wpm or more is. This means that we would expect a mean reading rate of 91.8 or higher from a population whose mean reading rate is 89 in of every 100 random samples of size n=21 students. The new program is abundantly more effective than the old program. O B. A mean reading rate of 91.8 wpm is not unusual since the probability of obtaining a result of 91.8 wpm or more is . This means that we would expect a mean reading rate of 91.8 or higher from a population whose mean reading rate is 89 in of every 100 random samples of size n =21 students. The new program is not abundantly more effective than the old program. (f) There is a 5% chance that the mean reading speed of a random sample of 21 second grade students will exceed what value?
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question #19 Part E & F
Transcribed Image Text:The reading speed of second grade students in a large city is approximately normal, with a mean of 89 words per minute (wpm) and a standard deviation of 10 wpm. Complete parts (a) through (f).
.... .
(e) A teacher instituted 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 21 second grade students was 91.8 wpm. What might you conclude based on this result?
Select the correct choice below and fill in the answer boxes within your choice.
(Type integers or decimals rounded to four decimal places as needed.)
A. A mean reading rate of 91.8 wpm is unusual since the probability of obtaining a result of 91.8 wpm or more is
. This means that we would expect a mean reading rate of 91.8 or higher from a population whose mean reading rate is 89
in
of
every 100 random samples of size n =21 students. The new program is abundantly more effective than the old program.
B. A mean reading rate of 91.8 wpm is not unusual since the probability of obtaining a result of 91.8 wpm or more is . This means that we would expect a mean reading rate of 91.8 or higher from a population whose mean reading rate is
89 in
of every 100 random samples of size n = 21 students. The new program is not abundantly more effective than the old program.
(f) There is a 5% chance that the mean reading speed of a random sample of 21 second grade students will exceed what value?
There is a 5% chance that the mean reading speed of a random sample of 21 second grade students will exceed
wpm. (Round to two decimal places as needed.)
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