6. Trisomy 21, also called Down syndrome, is caused by having a third copy of the 21t chromosome. The triple test is one of many tests that a pregnant parent can take to see if their developing fetus has Trisomy 21. The triple test detects Trisomy 21 when it is present 60% of the time. This means it has a false negative rate of 40%. The triple test gives a false positive 5% of the time (when the fetus does not have trisomy 21). The probability that a fetus has trisomy 21 is 0.001 a. If a pregnant narent takes a triple test, what is the probability that they will get positive result b. If a pregnant parent has already received a positive triple test result, what is the probability that the developing fetus has Trisomy 21

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6. Trisomy 21, also called Down syndrome, is caused by having a third copy of the 21*t
chromosome. The triple test is one of many tests that a pregnant parent can take to see if
their developing fetus has Trisomy 21. The triple test detects Trisomy 21 when it is present
60% of the time. This means it has a false negative rate of 40%. The triple test gives a false
positive 5% of the time (when the fetus does not have trisomy 21). The probability that a
fetus has trisomy 21 is 0.001
a. Ifa prepnant parent takes a triple test, what is the probability that they will get positive
result
b. If a pregnant parent has already received a positive triple test result, what is the probability
that the developing fetus has Trisomy 21
Transcribed Image Text:6. Trisomy 21, also called Down syndrome, is caused by having a third copy of the 21*t chromosome. The triple test is one of many tests that a pregnant parent can take to see if their developing fetus has Trisomy 21. The triple test detects Trisomy 21 when it is present 60% of the time. This means it has a false negative rate of 40%. The triple test gives a false positive 5% of the time (when the fetus does not have trisomy 21). The probability that a fetus has trisomy 21 is 0.001 a. Ifa prepnant parent takes a triple test, what is the probability that they will get positive result b. If a pregnant parent has already received a positive triple test result, what is the probability that the developing fetus has Trisomy 21
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