(Round to the nearest thousandth as needed.) a. Randomly selecting a mother 30-3

Question

(Round to the nearest thousandth as needed.)

a. Randomly selecting a mother 30-39 years old

P(30 to 39)

b. Randomly selecting a mother not 30-39 years old

P(not 30 to 39)

c. Randomly selecting a mother less than 45 years old

P(less than 45)

d. Randomly selecting a mother at least 20 years old

P(at least 20)almost equals

Homework: Section 3.3 Save Score: 0 of 1 pt 10 of 15 (14 complete) Score: 85%, 12.75 of 15 pts 3.3.19 Question Help * 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 1.6%) 20-24 6.4%) 25-29 21.6%) 30-34 37.3% 35-39 24.7%) 40-44 5.3% 45-54 3.1%

Explanation / Answer

a) P(30 to 39) is given by blue and pink sector = 37.3+24.7 = 62%

b) P(not 20 to 39)=1-P(30 to 39)=1-0.62 =0.38 or 38%

c) P(less than 45) =1-P(45-50)=1-0.031=0.969 or 96.9%

d) P(atleast 20)=1-P(15-19)=1-0.016=0.984 or 98.4%

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