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Fynjy0 [20]
3 years ago
7

Use a calculator to find the trigonometric value.

Mathematics
1 answer:
Artemon [7]3 years ago
8 0
The answer is 1.804
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Increasing the sample size while keeping the same confidence level has what effect on the margin of error? A. Increases the marg
DiKsa [7]

Answer:

C. Decreases the margin of error and hence increases the precision

Step-by-step explanation:

If we select a sample by Simple Random Sampling in a population of “infinite” size (a population so large that we do not know its size exactly), then the margin of error is given by

\bf E=\frac{ZS}{\sqrt{n}}

where  

<em>Z = The Z-score corresponding to the confidence level </em>

<em>S = The estimated standard deviation of the population </em>

<em>n = the size of the sample. </em>

As we can see, since n is in the denominator of the fraction and the numerator is kept constant, the larger the sample size the smaller the margin of error, so the correct choice is:

C. Decreases the margin of error and hence increases the precision

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What happens to the graph of y = |x| when the equation changes to y |x-9|?
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A room has a length of 7 m.
Artemon [7]
If you convert 7m to centimetres you get 700
3 0
3 years ago
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What is the correct answer and how can this be solved?
pav-90 [236]

Answer:

$\mathbf{\frac{1}{19} }

Step-by-step explanation:

$$\bullet \Nth \ Term;\\$$$\frac{n+2}{2n^{2} +3n-2}

$$\bullet U_{10} \ Term;\\\\$$\boxed{\frac{(10+2) }{2*10^{2} +3*10-2}=  \frac{1}{19} }

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3 years ago
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