Question

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Answer 1

Sol: Given that Psychologists believe that excessive eating may be associated with emotional states, like watching television, reading and so on. Here for we are a period considering a sample of 64 persons of 2 weeks. There will be 32 Pairs. In each pair one is watching television and . the other person is reading novel. The random variable x is defined as the no. of Pairs for which the intake is exceeded than intake of other person in the Pair. The is probability exceeded that than intake of one member the other p=0.5 n = 32, P=0.5 , 9=1-P = 0.5 The normal approximation to the binomial Probabilities will be appropriate If both np>s and ng>s

np = 32x0.5 = 16 >5 ng - 32X0.5 -16 >5 .: We can use normal approximation The mean of x is M =nXP - 32 X0.5 = 16 S.D. of (o): vnxex I 32X0.SXO.S F = 2.82841 - standard normal variable 2, corresponding X=32 2 - 20-15 2.8284 - Sou 2.8284 2 = 1.7677 using the standard normal table, P 1241.767) = 0.9608 : The data does not provide sufficient evidence
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