Number of Multiple Births The percent distribution of live multiple-delivery bir

Question

Number of Multiple Births 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. 5-19 1.5% 20-24 6.2% 25-29 21.4% 30-34 37.3% 35-39 24.4% 40-44 5.2% 45-54 4 a. Randomly selecting a mother 30-39 years old P(30 to 39)Round to the nearest thousandth as needed.) b. Randomly selecting a mother not 30-39 years old P(not 30 to 39)Round to the nearest thousandth as needed.) c. Randomly selecting a mother less than 45 years old P(less than 45)Round to the nearest thousandth as needed.) d. Randomly selecting a mother at least 20 years old Plat least 20)(Round to the nearest thousandth as needed.)

Explanation / Answer

a) .373+.244= .617

b) .015+.062+.214+.052+.04= .383

c) 1-.04= .96

d) 1-.015= .985

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