Mathematics, 05.05.2020 17:21 ruchierosanp1n3qw
Suppose parts (a) through (d) below provide results for a study on the role of calcium in reducing the symptoms of PMS. For each of the parts, compute an approximate 95% confidence interval for the difference in mean symptom scores between the placebo and calcium-treated conditions for the symptom listed. In each case, the results given are mean ± standard deviation. Suppose there were 228 participants in the placebo group and 212 in the calcium-treated group. (Round your answers to two decimal places.)
(a) mood swings: placebo = 0.70 ± 0.78; calcium = 0.50 ± 0.53
(b) crying spells: placebo = 0.39 + 0.57; calcium = 0.21 + 0.40
(c) aches and pains: placebo = 0.45 + 0.60; calcium = 0.37 + 0.45
(d) craving sweets or salts: placebo = 0.60 + 0.75; calcium = 0.44 + 0.61
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Suppose parts (a) through (d) below provide results for a study on the role of calcium in reducing t...
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