Two schedules for giving rest were compared-the massed schedule and the spaced schedule. Twenty observations of the spaced schedule produced a mean of 26 errors. On the massed schedule 14 observations resulted in a mean of 36 errors. An $\alpha$level of .05 was adopted and an F = 4.21 was obtained. What conclusion is appropriate?
A) The null hypothesis should be retained.
B) Massed practice produces fewer errors than spaced practice.
C) Spaced practice produces fewer errors than massed practice.

Question

Quizplus · Accepted Answer

Since an F-value of 4.21 was obtained and an alpha level of .05 was adopted, this indicates that there is a statistically significant difference between the two schedules. Given that the mean number of errors for the spaced schedule (26 errors) is lower than for the massed schedule (36 errors), the conclusion is that spaced practice produces fewer errors than massed practice.

Two Schedules for Giving Rest Were Compared-The Massed Schedule and the Spaced