1. A psychologist would like to examine the effect of fatigue on mental alertness. An attention test is prepared which requires subjects to sit in front of a blank TV screen and press a response button each time a dot appears on the screen. A total of 110 dots are presented during a 90-minute period, and the psychologist records the number of errors for each subject. Two groups of subjects are selected. The first group (n=5) is tested after they have been kept awake for 24 hours. The second group (n=10) istested in the morning after a full night's sleep.The data for these two samples are as follows:

Awake 24 hours: x=35 ss=120

rested: x=24 ss=360

On the basis of these data, can psychologist conclude that fatigue significantly increases errors on an attention task? Test with=.05 and report effect size.