1. On the basis of her experience with clients, a clinical psychologist thinks that depression may affect sleep. She decides to test this idea. The sleep of nine depressed patients and eight normal controls is monitored for three consecutive nights. The average number of hours slept by each subject during the last two nights is shown in the following table: (Pagano, 2010). If proved significant, compute of the effect size. Hours of Sleep Depressed patients 7.1 Normal controls 8.2 6.8 7.5 6.7 7.7 7.3 7.8 7.5 8.0 6.2 7.4 6.9 7.3 6.5 6.5 7.2

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1. On the basis of her experience with clients, a clinical psychologist thinks that
depression may affect sleep. She decides to test this idea. The sleep of nine
depressed patients and eight normal controls is monitored for three consecutive
nights. The average number of hours slept by each subject during the last two
nights is shown in the following table: (Pagano, 2010). If proved significant,
compute of the effect size.
Hours of Sleep
Depressed patients
7.1
Normal controls
8.2
6.8
7.5
6.7
7.3
7.7
7.8
7.5
8.0
6.2
7.4
6.9
7.3
6.5
6.5
7.2
Transcribed Image Text:1. On the basis of her experience with clients, a clinical psychologist thinks that depression may affect sleep. She decides to test this idea. The sleep of nine depressed patients and eight normal controls is monitored for three consecutive nights. The average number of hours slept by each subject during the last two nights is shown in the following table: (Pagano, 2010). If proved significant, compute of the effect size. Hours of Sleep Depressed patients 7.1 Normal controls 8.2 6.8 7.5 6.7 7.3 7.7 7.8 7.5 8.0 6.2 7.4 6.9 7.3 6.5 6.5 7.2
2. An educator wants to determine whether early exposure school will affect IQ.
He enlists the aid of the parents of 12 pairs of pre-school-age identical twins who
agree to let their twins participate in the experiment. One member of each twin pair
is enrolled in preschool for 2 years while the other member of each pair remains at
home. At the end of 2 years, the IQs of all the children are measured. The results
follow: (Pagano, 2010) If proved significant, compute of the effect size.
IQ
Twins at home
Pair
Twins at preschool
1
110
114
2
121
118
3
107
103
4
117
112
115
117
6
112
106
Transcribed Image Text:2. An educator wants to determine whether early exposure school will affect IQ. He enlists the aid of the parents of 12 pairs of pre-school-age identical twins who agree to let their twins participate in the experiment. One member of each twin pair is enrolled in preschool for 2 years while the other member of each pair remains at home. At the end of 2 years, the IQs of all the children are measured. The results follow: (Pagano, 2010) If proved significant, compute of the effect size. IQ Twins at home Pair Twins at preschool 1 110 114 2 121 118 3 107 103 4 117 112 115 117 6 112 106
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