Question

Question 24: The data on the right represent the number of live multiple delivery births ( three or more babies) in a particular year from women 15 to 54 years old. Use the data to complete parts A through D below.

Age.   Number of multiple births
15-19 95
20-24 515
25-29 1635
30-34   2820
35-39   1847
40-44    382
45-54    118

A. Determine the probability that a randomly selected multiple birth for women 15 -54 years old involved a mother 30 to 39 years old.

P(30 to 39)=
(Type a integer or decimal rounded to three decimal places as needed)

B. 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.

P(not 30 to 39)=

C. 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.

P(less than 45)=

D. 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 is unusual?

Find the probability that a randomly selected multiple birth for women 15-54 years old involved a mother who was at least 40 years old.

P(at least 40)=

interpret this result. Select the correct choice below and fill in the answer box to complete your choice. (Type a whole number)

O. A. If 1000 multiple births for women 15-54 years old were randomly selected, we would expect about ______.

O. B. If 1000 multiple births for women 15-54 years old were randomly selected, exactly _____ of them would involve a mother who was at least 40 years old.

Is a multiple birth involving a mother who was at least 40 years old unusual?

A. Yes, because the probability of a multiple birth involving a mother was at least 40 years old is greater than 0.05.

B. No, because the probability of a multiple birth involving a mother who was at least 40 years old is less than 0.05.

C. Yes, because the probability of a multiple birth involving a mother who was at least 40 years old is less than 0.05

D. No, because the probability of a multiple birth involving a mother who was at least 40 years old is greater than 0.05

Answer 1