a pediatrician tested the claim that the mean weight of one-year old boys is greater than 25 pounds for 360 randomly chosen one year-old boys, their mean weight was 25.5 pounds. what is population?

The population is all one year-old boys.

This question uses the concepts of sample and populations.

After the explanation of these concepts, we have that:

Sampling:

I want to estimate the proportion of New York state residents who are Buffalo Bills fans. So i ask, lets say, 1000 randomly selected New York state residents whether they are Buffalo Bills fans, and expand this to the entire population of New York State residents, which is the population of the study.

In this question:

Study of mean weight of one-year old boys, sample of 360 randomly chosen one year-old boys. Thus, the population of interest is given by all one year-old boys.

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solution

Step-by-step explanation:

Step one:

given the expression

opening the bracket we have

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