# An obstetrician does ultrasound examinations on her

## Problem 13E Chapter 4.5

Probability and Statistical Inference | 9th Edition

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Problem 13E

PROBLEM 13E

An obstetrician does ultrasound examinations on her patients between their 16th and 25th weeks of pregnancy to check the growth of each fetus. Let X equal the widest diameter of the fetal head, and let Y equal the length of the femur, both measurements in mm. Assume that X and Y have a bivariate normal distribution with μX = 60.6, σX = 11.2, μY = 46.8, σY = 8.4, and ρ= 0.94.

(a) Find P(40.5 < Y < 48.9).

(b) Find P(40.5 < Y < 48.9 |X = 68.6).

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Growth Theory—10.7.2016 Solow I:  Relationship between inputs and outputs in the economy  Y = F(physical capital, human capital, and natural resources)  First version of the model focused solely on physical capital. Why Because: o Capital resources in wealthy nations far exceed those in developing nations o Periods of...

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