Two groups of individuals were comp a high carbohydrate low-fat diet (LF) carbohydrate diet (LC). Mood was ass mood disturbance score where a lowe with a less negative mood. Assuming samples come from independent norr with a common but unknown varianc

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Two groups of individuals were compared with respect to
a high carbohydrate low-fat diet (LF) and a high-fat low
carbohydrate diet (LC). Mood was assessed using a total
mood disturbance score where a lower score is associated
with a less negative mood. Assuming that the random
samples come from independent normal distributions
with a common but unknown variance, construct a 95%
confidence interval for the difference between the two
population means, LC less LF.
Group
LC
LF
28+18.56
28±8.96
28±22.37
28+22.30
n
12
13
mean
47.3
19.3
standard
deviation
28.3
25.8
Transcribed Image Text:Two groups of individuals were compared with respect to a high carbohydrate low-fat diet (LF) and a high-fat low carbohydrate diet (LC). Mood was assessed using a total mood disturbance score where a lower score is associated with a less negative mood. Assuming that the random samples come from independent normal distributions with a common but unknown variance, construct a 95% confidence interval for the difference between the two population means, LC less LF. Group LC LF 28+18.56 28±8.96 28±22.37 28+22.30 n 12 13 mean 47.3 19.3 standard deviation 28.3 25.8
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