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SOLVED: QUESTION 17How much larger is the intensity of sound at 40 dB than sound at 0 dB?0 101000u1000'100o01o0000

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SOLVED: The ideal (daytime) noise-level for hospitals is 45 decibelswith a standard deviation of 10 db; which is to say, this may notbe true. A simple random sample of 75 hospitals at a moment duringthe day gives a mean noise level of 47 db. Assume that the standarddeviation of noise level for all hospitals is really 10 db. Allanswers to two places after the decimal.(g) How many hospitals must we examine to have 95% confidencethat we have the margin of error to within 0.5 db?(h) How many hospita

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