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45 votes
45 votes
My test is tomorrow and I need help with my review please!

My test is tomorrow and I need help with my review please!-example-1
User Vis
by
2.9k points

1 Answer

11 votes
11 votes

It is important to know that the sample would be the starters and the population is all members.

So, let's use the mean formula to find the mean sample


\bar{x}=(\Sigma(x))/(n)

Where n = 21.

Now, we have to add all the heights of the starter players.


\begin{gathered} \Sigma(x)=75+81+72+84+79+68+77+84+79+78+83+76+83+71+80+75+77+84+77+80+75 \\ \Sigma(x)=1638 \end{gathered}

Then, we divide


\bar{x}=(1638)/(21)=78

Therefore, the mean sample is 78 inches.

Now, let's find the population mean using all team data instead


\mu=(\Sigma(x))/(N)

Where N = 35. Let's do the same process.


\begin{gathered} \mu=(75+80+69+77+70+77+68+81+80+77+80+84+72+69+79+84+75+78+84+76+79+83+72+77+75+76+79+84+78+76+71+83+75+69+77)/(75) \\ \mu=(2689)/(35)=76.83 \end{gathered}

Therefore, the mean population is 76.83 inches.

User Prazhus
by
3.2k points
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