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Q1) Researcher would to study the effects of humidity on eating behaviour. It is known that laboratory rats normally eat average of m = 21 grams of food each day. Researcher chooses random sample of n = 16 rats and places in controlled atmosphere room in which relative humidity is maintained at 90%. Daily food consumption scores for rats are as follows:

14, 18, 21, 15, 18, 18, 21, 18, 16, 20, 17, 19, 20, 17, 17, 19

a) Can researcher conclude that humidity has significant effect on eating behaviour? Use two-tailed test with a = 0.05

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