# Question

The following data represent the number of live multiple-delivery births (three or more babies) in 2007 for women 15 to 54 years old:

Age ...... Number of Multiple Births

15–19 ...... 100

20–24 ...... 467

25–29 ...... 1620

30–34 ...... 2262

35–39 ...... 1545

40–44 ...... 328

45–54 ...... 105

Total ...... 6427

(a) Determine the probability that a randomly selected multiple birth in 2007 for women 15 to 54 years old involved a mother 30 to 39 years old. Interpret this probability.

(b) Determine the probability that a randomly selected multiple birth in 2007 for women 15 to 54 years old involved a mother who was not 30 to 39 years old. Interpret this probability.

(c) Determine the probability that a randomly selected multiple birth in 2007 for women 15 to 54 years old involved a mother who was less than 45 years old. Interpret this probability.

(d) Determine the probability that a randomly selected multiple birth in 2007 for women 15 to 54 years old involved a mother who was at least 20 years old. Interpret this probability.

Age ...... Number of Multiple Births

15–19 ...... 100

20–24 ...... 467

25–29 ...... 1620

30–34 ...... 2262

35–39 ...... 1545

40–44 ...... 328

45–54 ...... 105

Total ...... 6427

(a) Determine the probability that a randomly selected multiple birth in 2007 for women 15 to 54 years old involved a mother 30 to 39 years old. Interpret this probability.

(b) Determine the probability that a randomly selected multiple birth in 2007 for women 15 to 54 years old involved a mother who was not 30 to 39 years old. Interpret this probability.

(c) Determine the probability that a randomly selected multiple birth in 2007 for women 15 to 54 years old involved a mother who was less than 45 years old. Interpret this probability.

(d) Determine the probability that a randomly selected multiple birth in 2007 for women 15 to 54 years old involved a mother who was at least 20 years old. Interpret this probability.

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