Recently, a neurotransmitter called Galanin has been discovered that appears to effect one's desire to eat foods with a high fat content. Specifically, the more of this naturally occurring neurotransmitter an individual possesses, the higher his/her craving for high fat foods. Recently, a drug company developed an experimental drug that blocks Galanin without affecting appetite for lower fat foods. The company immediately sets out to test the drug. An experiment is conducted in which 12 female volunteers are randomly selected and given a daily dose of the experimental drug for six months. Their weights are measured before and after the drug treatment. The data from study are in the table below. Can the pharmaceutical company conclude that the mean weight after the drug is significantly different than mean weight before the administration of the drug? Test with an α = 0.01. Calculate and interpret the effect size.

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  1. Recently, a neurotransmitter called Galanin has been discovered that appears to effect one's desire to eat foods with a high fat content. Specifically, the more of this naturally occurring neurotransmitter an individual possesses, the higher his/her craving for high fat foods. Recently, a drug company developed an experimental drug that blocks Galanin without affecting appetite for lower fat foods. The company immediately sets out to test the drug. An experiment is conducted in which 12 female volunteers are randomly selected and given a daily dose of the experimental drug for six months. Their weights are measured before and after the drug treatment. The data from study are in the table below.
      1. Can the pharmaceutical company conclude that the mean weight after the drug is significantly different than mean weight before the administration of the drug? Test with an α = 0.01.
      2. Calculate and interpret the effect size.

 

Weight before drug
treatment (Ibs)
165
Weight after drug
treatment (Ibs)
145
143
175
137
170
135
136
148
141
138
137
125
161
155
158
140
172
164
156
178
165
182
170
Transcribed Image Text:Weight before drug treatment (Ibs) 165 Weight after drug treatment (Ibs) 145 143 175 137 170 135 136 148 141 138 137 125 161 155 158 140 172 164 156 178 165 182 170
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