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# Identical and Fraternal Twins.use the data in the

ISBN: 9780321836960 18

## Solution for problem 25BSC Chapter 4.5

Elementary Statistics | 12th Edition

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Elementary Statistics | 12th Edition

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Problem 25BSC

Identical and Fraternal Twins.use the data in the following table. Instead of summarizing observed results, the entries reflect the actual probabilities based on births of twins (based on data from the Northern California Twin Registry and the article “Bayesians, Frequentists, and Scientists” by Bradley Efron,Journal of the American Statistical Association,Vol. 100, No. 469). Identical twins come from a single egg thatsplits into two embryos, and fraternal twins are from separate fertilized eggs. The table entries reflect the principle that among sets of twins, 1/3 are identical and 2/3 are fraternal. Also, identical twins must be of the same sex and the sexes are equally likely (approximately), and sexes of fraternal twins are equally likely.

Identical Twins

a.After having a sonogram, a pregnant woman learns that she will have twins. What is the probability that she will have identical twins?

b.After studying the sonogram more closely, the physician tells the pregnant woman that she will give birth to twin boys. What is the probability that she will have identical twins? That is, find the probability of identical twins given that the twins consist of two boys.

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##### ISBN: 9780321836960

Since the solution to 25BSC from 4.5 chapter was answered, more than 672 students have viewed the full step-by-step answer. The answer to “Identical and Fraternal Twins.use the data in the following table. Instead of summarizing observed results, the entries reflect the actual probabilities based on births of twins (based on data from the Northern California Twin Registry and the article “Bayesians, Frequentists, and Scientists” by Bradley Efron,Journal of the American Statistical Association,Vol. 100, No. 469). Identical twins come from a single egg thatsplits into two embryos, and fraternal twins are from separate fertilized eggs. The table entries reflect the principle that among sets of twins, 1/3 are identical and 2/3 are fraternal. Also, identical twins must be of the same sex and the sexes are equally likely (approximately), and sexes of fraternal twins are equally likely. Identical Twinsa.After having a sonogram, a pregnant woman learns that she will have twins. What is the probability that she will have identical twins?b.After studying the sonogram more closely, the physician tells the pregnant woman that she will give birth to twin boys. What is the probability that she will have identical twins? That is, find the probability of identical twins given that the twins consist of two boys.” is broken down into a number of easy to follow steps, and 183 words. Elementary Statistics was written by and is associated to the ISBN: 9780321836960. The full step-by-step solution to problem: 25BSC from chapter: 4.5 was answered by , our top Statistics solution expert on 03/15/17, 10:30PM. This textbook survival guide was created for the textbook: Elementary Statistics, edition: 12. This full solution covers the following key subjects: twins, identical, fraternal, Probability, woman. This expansive textbook survival guide covers 121 chapters, and 3629 solutions.

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