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4, 6, 12, 2, 8, 9, 11, 15, 20, 25 Please answer the following question using...

4, 6, 12, 2, 8, 9, 11, 15, 20, 25

Please answer the following question using the above data set:

1. What is the predicted population standard deviation?

2. Draw and superimpose a bell curve and label your data up to 3 standard deviation units from the mean. Use the standard deviation for the data set.

3. Is the above data set more or less variable than a data set that has a standard deviation of 7.25?

4. Is the above data set more or less variable than this set: 5, 12, 14, 20, 6, 30, 7, 6, 9, 13?

Math   Statistics-And-Probability   
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