Answer:
76.9690 square units (rounded off to four decimal values)
Step-by-step explanation:
The diameter of the semicircle is 14 units
The radius of the semicircle is thus 14 ÷ 2 = 7 units
Area of a semicircle is given by: × π × r²
In our case, the area is = × π × 7² = 76.9690200129 square units
Or 76.9690 square units (rounded off to four decimal values)
Simple random selection involves a selection where all the elements in the dataset have the same chance of being selected.
The selected names are:
<em>Engler, Motola, Redmond and Zenkel</em>
We have:
--- All names
---- Sample to select
There are several ways to select a sample of 4 using a simple random sample. Some ways are:
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Going by the third method, the selected positions are:
4, 8, 12, 16, 20, 24, 28 and 32
Select 4 positions that can be divided by 8
8, 16, 24 and 32
So, the selected names are:
<em>Engler, Motola, Redmond and Zenkel</em>
Read more about random selection at: