Question

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 19 second grade students was 91.7 wpm. What might you conclude based on this​ result? A) A mean reading rate of 93.9 wpm is unusual since the probability of obtaining a result of 93.9 wpm or more is ____. The new program is abundantly more effective than the old program.

B) A mean reading rate of 93.9 wpm is not unusual since the probability of obtaining a result of 93.9 wpm or more is____. The new program is not abundantly more effective than the old program.

Answer 1

The correct option is

(A) <0.05

A) A mean reading rate of 93.9 wpm is unusual since the probability of obtaining a result of 93.9 wpm or more is <0.05_. The new program is abundantly more effective than the old program.

Explanation:

An unusual event is one that is less likely to occur or one that realy occurs. It is an event that is unlikey to ocur except and the probability of an unlikely event is normally taken as < 0.05

An unusual even is defined as a value of data that is larger or smaller than the mean by mor than two standard deviations

The correct answer is

A) A mean reading rate of 93.9 wpm is unusual since the probability of obtaining a result of 93.9 wpm or more is < 0.05_. The new program is abundantly more effective than the old program.