Do you have a great deal of confidence in the advice given to you by your medical doctor? About 45% of all adult Americans claim they do have a great deal of confidence in their M.D.s. Suppose a random sample of n = 31 adults in a health insurance program are asked about their confidence in the medical advice their doctors give. (a) Is the normal approximation to the proportion p̂ = r/n valid?(Round your answers to two decimal places.) It  ---Select--- is is not possible to use the normal approximation to the binomial distribution because n · p = , which is  ? > ≤ 5, and n · q = , which is  ? > ≤ 5. (b) Find the values of μp̂ and σp̂. (Round your answer for σp̂ to three decimal places.) μp̂ =   σp̂ =

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