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A teacher instituted a new reading program at school. After 10 weeks in the​ program, it...

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Statistics

A teacher instituted a new reading program at school. After 10weeks in the​ program, it was found that the mean reading speed ofa random sample of 20 second grade students was

94.4 wpm. What might you conclude based on this​ result? Selectthe correct choice below and fill in the answer boxes within yourchoice.

​(Type integers or decimals rounded to four decimal places as​needed.)

A. A mean reading rate of 94.4 wpm is not unusual since theprobability of obtaining a result of 94.4 wpm or more is ____. Thismeans that we would expect a mean reading rate of 94.4

or higher from a population whose mean reading rate is 92 in____ of every 100 random samples of size n=20 students. The newprogram is not abundantly more effective than the old program.

B. A mean reading rate of 94.4 wpm is unusual since theprobability of obtaining a result of 94.4 wpm or more is ____. Thismeans that we would expect a mean reading rate of 94.4

or higher from a population whose mean reading rate is 92 in____ of every 100 random samples of size n=20 students. The newprogram is abundantly more effective than the old program.

Answer & Explanation Solved by verified expert
3.8 Ratings (398 Votes)
92 10 n 20 X 944 Z X n 9449210sqrt20107 Using excel command normsdist107 PX 944 01423 A A    See Answer
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