In the US I want to know what proportion of 13-year-olds vape. Three distributions are associated...

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In the US I want to know what proportion of 13-year-olds vape.Three distributions are associated with this question: populationdistribution, sample distribution, and sampling distribution.Describe the role of each in answering this question.
In cross-sectional analysis explain why it is necessary to takea random sample.
Describe the difference between an estimator and an estimate andexplain why estimators are random variables while estimates arenot.
Explain why point estimates are always wrong.

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1Population distribution The population is the whole set of values or individuals you are interested in Population characteristic are mean Standard deviation proportion P median percentiles etc The value of a population characteristic is fixed This characteristics are called population distribution They are symbolized by Greek characters as they are population parameters2 Sample Distribution The sample is a subset of the population and is the set of values you actually use in your estimation This sample has some quantity computed from values eg mean x Standard deviation s sample proportion See Answer

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