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    Confidence interval for population mean

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    Use the given confidence level and sample data to find (a) the margin of error and (b) the confidence interval for the population mean. Assume that the population has a normal distribution.

    Weight lost on a diet: 99% confidence; n = 61, x = 3.0 kg. s = 5.7 kg.

    (a) E = ______kg (Round to one decimal place)

    (b) What is the confidence interval for the population mean?

    ______ kg < mean < _______ (Round to one decimal place)

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