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March 30, 2017

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The following data represent the number of live births in the United States in 2007 for women 15 to 49 years old.

Age Live Births

15 - 19 445,045

20 - 24 1,082,837

25 - 29 1,208,405

30 - 34 962,179

35 - 39 499,916

40 - 44 105,071

45 - 49 7,349

Find the following:

1. What is the class width?

2. What is the sample size (n)?

3. What is the mean of the ages?

4. What is the standard deviation of the ages?

5. Construct a relative frequency distribution.

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