The data on the right represent the number of live multiple-delivery births (thr

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 determine the following. 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) almostequalto d. Determine the probability that a randomly selected multiple birth for women 15-54 years old involved a mother who was at least 20 years old P(at least 20) almostequalto

Explanation / Answer

Total number of women = sum of frequencies = 90+513 + ......113 = 7397

a) Probability that a randomly selected multiple birth for women 15-54 years old involved a monther who was less than 45 years old:

P( less than 45) = n( less than 45) / Total number of women

= 1 - P( greater than 45)

= 1 - (113 / 7397 ) =

= 0.9847

Therefore 0.985 is the required probability here.

d) Probability that a random selected multiple birth for women 15-54 years ols involved a monther who was at least 20 years old

P( at least 20 ) = 1 - P( less than 20)

= 1 - (90/ 7397 )

= 0.9878

Therefore 0.988 is the required probability here.

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