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Elementary,Middle School,High School,College,University,PHD
| Teaching Since: | May 2017 |
| Last Sign in: | 407 Weeks Ago, 6 Days Ago |
| Questions Answered: | 66690 |
| Tutorials Posted: | 66688 |
MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
10.62 An article titled “Teen Boys Forget Whatever It Was” appeared in the Australian newspaper The Mercury (April 21, 1997). It described a study of academic per- formance and attention span and reported that the mean time to distraction for teenage boys working on an inde- pendent task was 4 min. Although the sample size was not given in the article, suppose that this mean was based on a random sample of 50 teenage Australian boys and that the sample standard deviation was 1.4 min. Is there convincing evidence that the average attention span for
teenage boys is less than 5 min? Test the relevant hypothe- ses using a = .01.
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