The percent distribution of live? multiple-delivery births? (three or more? babi

Question

The percent distribution of live? multiple-delivery births? (three or more? babies) in a particular year for women 15 to 54 years old is shown in the pie chart. Find each probability. A pie chart labeled "Number of Multiple Births" is divided into seven sectors with labels and approximate sizes as a percentage of a circle as follows: 15-19, 1.2 percent; 20-24, 6.4 percent; 25-29, 21.4 percent; 30-34, 37.4 percent; 35-39, 24.5 percent; 40-44, 5.3 percent; 45-54, 3.8 percent. Number of Multiple Births 15-19 1.2% 20-24 6.4% 25-29 21.4% 30-34 37.4% 35-39 24.5% 40-44 5.3% 45-54 3.8% a. Randomly selecting a mother? 30-39 years old ?P(30 to ?39) almost equals ? nothing ?(Round to the nearest thousandth as? needed.)

Explanation / Answer

Given:

15 - 19         1.2 %

20 - 24          6.4 %

25 - 29          21.4 %

30 - 34          37.4 %

35 - 39           24.5 %

40 - 44            5.3 %

45 - 54            3.8 %

(a)

P(30-39) = 0.374 + 0.245 = 0.619

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