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# Persons having Reynaud's syndrome are apt to suffer a sudden impairment of blood circulation in fingers and toes.

Persons having Reynaud's syndrome are apt to suffer a sudden impairment of blood circulation in fingers and toes. In an experiment to study the extent of this impairment, each subject immersed a forefinger in water and the resulting heat output (cal/cm2/min) was measured. For n1 = 10 subjects with the syndrome, the average heat output was 0.93, while n2 = 10 non - sufferers, the average output was 1.16. The researchers have assumed that the heat outputs are normal with true standard deviations are 0.3 and 0.5, respectively for sufferers and non-sufferers. Do sufferers of Reynaud's syndrome a lower heat output than non-sufferer? (Use α = 1%)

a.    No, since Statisticobs = -0.821 > Statisticcri = -2.326

b.    No, since Statisticobs = -1.278 > Statisticcri = -2.326

c.    Yes, since Statisticobs = -0.821 < Statisticcri = 2.326

d.    Yes, since Statisticobs = -1.278 > Statisticcri = 2.326

e.    None of the above

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