- 9-7.1: Heredity Problem: If a dark-haired mother and father have a particu...
- 9-7.2: Multiple-Choice Test 1: A short multiple-choice test has four quest...
- 9-7.3: If you flip a thumbtack, it can land either point up or point down ...
- 9-7.4: Traffic Light 2: Three widely separated traffic lights on U.S. Rout...
- 9-7.5: Colorblindness Problem: Statistics show that about 8% of all males ...
- 9-7.6: Eighteen-Wheeler Problem: Large tractor-trailer trucks usually have...
- 9-7.7: Perfect Solo Problem: Clara Nett plays a musical solo. She is quite...
- 9-7.8: Airplane Engine 2: One reason commercial airplanes have more than o...
- 9-7.9: World Series Project: Suppose the Dodgers and the Yankees are in th...
- 9-7.10: Another Dice Problem: Suppose that a random experiment consists of ...
- 9-7.11: Proper Divisors Problem: An integer from 1 through 10 is selected a...
- 9-7.12: First Girl Problem: Eva and Paul want to have a baby girl. They kno...
- 9-7.13: Same Birthday Project: A group of students compare their birthdays....
- 9-7.14: Journal Problem: Update your journal with things you have learned s...
Solutions for Chapter 9-7: Functions of a Random Variable
Full solutions for Precalculus with Trigonometry: Concepts and Applications | 1st Edition
A sequence of equal periodic payments.
Boxplot (or box-and-whisker plot)
A graph that displays a five-number summary
The real number multiplied by the variable(s) in a polynomial term
Composition of functions
(f ? g) (x) = f (g(x))
Ellipsoid of revolution
A surface generated by rotating an ellipse about its major axis
A set with no elements
Linear programming problem
A method of solving certain problems involving maximizing or minimizing a function of two variables (called an objective function) subject to restrictions (called constraints)
The eight regions of space determined by the coordinate planes.
A pair of real numbers (x, y), p. 12.
Two lines that are both vertical or have equal slopes.
Polar coordinate system
A coordinate system whose ordered pair is based on the directed distance from a central point (the pole) and the angle measured from a ray from the pole (the polar axis)
Polar distance formula
The distance between the points with polar coordinates (r1, ?1 ) and (r2, ?2 ) = 2r 12 + r 22 - 2r1r2 cos 1?1 - ?22
A numerical simulation of a probability experiment in which assigned numbers appear with the same probabilities as the outcomes of the experiment.
For an angle ? in standard position, a reference triangle is a triangle formed by the terminal side of angle ?, the x-axis, and a perpendicular dropped from a point on the terminal side to the x-axis. The angle in a reference triangle at the origin is the reference angle
A statistical measure that does not change much in response to outliers.
A logarithmic scale used in measuring the intensity of an earthquake.
A sum where the interval is divided into n subintervals of equal length and is in the ith subinterval.
Second-degree equation in two variables
Ax 2 + Bxy + Cy2 + Dx + Ey + F = 0, where A, B, and C are not all zero.
Sum of a finite geometric series
Sn = a111 - r n 2 1 - r
The y-value of the bottom of the viewing window.