Question

In: Statistics and Probability

Is ultrasound a reliable method for determining the gender of an unborn baby? There is accompanying...

Is ultrasound a reliable method for determining the gender of an unborn baby? There is accompanying data on 1000 births in the table below.

Ultrasound
Predicted
Female
Ultrasound
Predicted
Male
Actual Gender Is
Female
488 40
Actual Gender Is
Male
147 325

(a) Use the given information to estimate the probability that a newborn baby is female, given that the ultrasound predicted the baby would be female. (Give the answer to three decimal places.)


(b) Use the given information to estimate the probability that a newborn baby is male, given that the ultrasound predicted the baby would be male. (Give the answer to three decimal places.)

Solutions

Expert Solution

Ultrasound
Predicted
Female
Ultrasound
Predicted
Male
Actual Gender Is
Female
488 40 528
Actual Gender Is
Male
147 325 472
635 365 1000

(a) Use the given information to estimate the probability that a newborn baby is female, given that the ultrasound predicted the baby would be female. (Give the answer to three decimal places.)
P(Actual Gender Is Female)= P(AF)

P(Ultrasound Predicted Female)=P(UF)

P(Actual Gender Is Male)= P(AM)

P(Ultrasound Predicted Male)=P(UM)

(b) Use the given information to estimate the probability that a newborn baby is male, given that the ultrasound predicted the baby would be male. (Give the answer to three decimal places.)


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