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  3. facebook penetration values (the percentage of a c

Facebook penetration values (the percentage of a country’s population that are Facebook users) for 15 randomly...

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  1. Facebook penetration values (the percentage of a country’spopulation that are Facebook users) for 15 randomly selectedcountries are: 52.56, 33.09, 5.37, 19.41, 32.52, 41.69, 51.61,30.12, 39.07, 30.62, 38.16, 49.35, 27.13, 53.45, 40.01.
    1. Give point estimates for the population mean Facebookpenetration (µ), and the population standard deviation ofFacebook penetration (σ).
    2. Construct a 95% confidence interval estimation for µ.Interpret.
    3. Construct a 95% confidence interval estimation forσ. Interpret.
    4. What assumptions do you need to make about the population sothat the

confidence intervals given in (b) and(c) are valid?

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d The assumptions needed to construct    See Answer
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