Workers Inc. just bought 12 boxes of pens to put in their storage room for
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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:
- <em>Select any 4</em>
- <em>List all names in even position and select the first 4</em>
- <em>List all names in position divide by 4 and select any 4 that is divided by 8</em>
- <em>List all names in odd position and select the first 4 that can be divided by 3</em>
- <em>Etc</em>
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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:
If you divide a fraction by another fraction, this is equivalent to mupltiplying by its inverse:
so
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multiplied by by
which is
so the answer is
which is also 0.5
so
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which is
so the answer is