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

My Test Is Tomorrow And I Need Help With My Review Please class=

Sagot :

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

[tex]\bar{x}=\frac{\Sigma(x)}{n}[/tex]

Where n = 21.

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

[tex]\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}[/tex]

Then, we divide

[tex]\bar{x}=\frac{1638}{21}=78[/tex]

Therefore, the mean sample is 78 inches.

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

[tex]\mu=\frac{\Sigma(x)}{N}[/tex]

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

[tex]\begin{gathered} \mu=\frac{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=\frac{2689}{35}=76.83 \end{gathered}[/tex]

Therefore, the mean population is 76.83 inches.

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