Number of Multiple Births The percent distribution of live multiple-delivery bir
ID: 3328879 • Letter: N
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. 15-19 1.4% 20-24 6.1% 25-29 21.5% 30-34 37.2% 35-39 24.4% 40-44 5.1% 45-54 4.3%) 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 P(at least 20(Round to the nearest thousandth as needed.)Explanation / Answer
a. Probability of randomly selecting a mother 30 - 39 years old
= 0.372 + 0.244
= 0.616.
b. Probability of randomly selecting a mother not 30 - 39 years old
= 1 - 0.616
= 0.384.
c. Probability of randomly selecting a mother less than 45 years old
= 1 - Probability of randomly selecting a mother over 45 years
= 1 - 0.043
= 0.957.
d. Probability of randomly selecting a mother atleast 20 years old
= 1 - Probability of selecting a mother under 20
= 1 - 0.014
= 0.986.
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