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13 December, 11:48

The proportion of baby boys born in the United States has historically been 0.507. You choose an SRS of 45 newborn babies and find that 40% are boys. Do ALL calculations to 5 decimal places before rounding. (a) In the list below, select all that apply.

The number 0.507 is a

Statistic Parameter

Sample mean

Population mean

Sample proportion

Population proportion

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  1. 13 December, 13:31
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    The number 0.507 is a statistic parameter and population proportion as it states the proportion since the beginning (historically).

    Step-by-step explanation:

    If you calculate it and it gives you stats then that makes it a statistic parameter, you have sample of 45 newborns and you multiply with 0.40 (out of hundred) you get 18 boys which just the sample proportion of the set given.

    If you multiply it with 0.507, it just gives about 22.81500 which just estimates that for every set of 45 babies you would get about 22 boys average.
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