Question

The data on the right represent the number of live​ multiple-delivery births​ (three or more​ babies) in a particular year for women 15 to 54 years old. Use the data to complete parts​ (a) through​ (d) below.

Age   Number of Multiple Births
15-19   93
20-24   513
25-29   1626
30-34   2833
35-39   1845
40-44   379
45-54   112

1. Determine the probability that a randomly selected multiple birth for women​ 15-54 years old involved a mother 30 to 39 years old.
2. Determine the probability that a randomly selected multiple birth for women​ 15-54 years old involved a mother who was not 30 to 39 years old.
3. Determine the probability that a randomly selected multiple birth for women​ 15-54 years old involved a mother who was less than 45 years old.
4. Determine the probability that a randomly selected multiple birth for women​ 15-54 years old involved a mother who was at least 40 years old. Interpret this result. Is it​unusual?
5. Is a multiple birth involving a mother who was at least 40 years old​ unusual?

Answer 1

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