Question

Asked Oct 21, 2019

**1, **a sample of size 68 will be drawn from a population with mean 92 and standard deviation 24.find the probability that xbar will be greater than 90.

**2,** a sample size of 5 will be drawn from a normal population with mean 60 and standard deviation 12. is it appropriate to use the normal distribution to find probabilities for Xbar

**3, TV set: ** a Nielson company report states that the mean number of tv sets in a U.S household is 2.24. assume the standard deviation is 1.2. a sample of 85 households is drawn. what is the probability that the sample mean number of tv sets is greater than 2?

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