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23 December, 07:54

For each of the following situations, state whether the parameter of interest is a mean or a proportion. (a) A poll shows that 64% of Americans personally worry a great deal about federal spending and the budget deficit.

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  1. 23 December, 09:15
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    a) the parameter of interest is a proportion

    b) the parameter of interest is a mean

    c) the parameter of interest is a proportion

    d) the parameter of interest is a proportion

    e) the parameter of interest is a mean

    Explanation:

    In mathematics, two varying quantities are said to be in a relation of proportionality, if they are multiplicatively connected to a constant, that is, when either their ratio or their product yields a constant. The value of this constant is called the coefficient of proportionality or proportionality constant.

    A mean is the simple mathematical average of a set of two or more numbers. The mean for a given set of numbers can be computed in more than one way, including the arithmetic mean method, which uses the sum of the numbers in the series, and the geometric mean method.
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