3 years ago

Please help last question !!!!!! Please help me !!!!!!!

Mathematics

1 answer:

marusya05 [52]3 years ago

6 0

Area of shaded rectangle:
A = L x W
A = 0.6 x 0.7
A = 0.42

answer
0.42 square units

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Step-by-step explanation:

The formula to find the sample size is given by :-

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Here we can see that the sample size is inversely proportion withe square of margin of error.

i.e. $n\ \alpha\ \dfrac{1}{E^2}$

By the equation inverse variation, we have

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Given : $E_1=0.05$ $n_1=1000$

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Then, we have

$(1000)(0.05)^2=n_2(0.025)^2\\\\\Rightarrow\ 2.5=0.000625n_2\\\\\Rightarrow\ n_2=\dfrac{2.5}{0.000625}=4000$

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