How to find the slope
2 answers:
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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
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
Answer:
Circumference is 18.84 feet. Area is 28.26 square feet.
Step-by-step explanation:
Given:
Radius of the circle,
The value of is 3.14.
Now, circumference of a circle of radius is given as:
Also, area of the circle of radius is given as:
Therefore, the circumference of the circle is 18.84 feet and area of the circle is 28.26 square feet.