×

×

# Solutions for Chapter 9-9: Probability, and Functions of a Random Variable ## Full solutions for Precalculus with Trigonometry: Concepts and Applications | 1st Edition

ISBN: 9781559533911 Solutions for Chapter 9-9: Probability, and Functions of a Random Variable

Solutions for Chapter 9-9
4 5 0 241 Reviews
25
4
##### ISBN: 9781559533911

This textbook survival guide was created for the textbook: Precalculus with Trigonometry: Concepts and Applications, edition: 1. Chapter 9-9: Probability, and Functions of a Random Variable includes 38 full step-by-step solutions. This expansive textbook survival guide covers the following chapters and their solutions. Precalculus with Trigonometry: Concepts and Applications was written by and is associated to the ISBN: 9781559533911. Since 38 problems in chapter 9-9: Probability, and Functions of a Random Variable have been answered, more than 21450 students have viewed full step-by-step solutions from this chapter.

Key Calculus Terms and definitions covered in this textbook
• Arithmetic sequence

A sequence {an} in which an = an-1 + d for every integer n ? 2 . The number d is the common difference.

• Combinations of n objects taken r at a time

There are nCr = n! r!1n - r2! such combinations,

• Distance (in a coordinate plane)

The distance d(P, Q) between P(x, y) and Q(x, y) d(P, Q) = 2(x 1 - x 2)2 + (y1 - y2)2

• Fitting a line or curve to data

Finding a line or curve that comes close to passing through all the points in a scatter plot.

• Graph of a function ƒ

The set of all points in the coordinate plane corresponding to the pairs (x, ƒ(x)) for x in the domain of ƒ.

• Hyperboloid of revolution

A surface generated by rotating a hyperbola about its transverse axis, p. 607.

• Inequality symbol or

<,>,<,>.

• Logarithmic function with base b

The inverse of the exponential function y = bx, denoted by y = logb x

• One-to-one function

A function in which each element of the range corresponds to exactly one element in the domain

• Ordered pair

A pair of real numbers (x, y), p. 12.

• Period

See Periodic function.

• 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)

• Quantitative variable

A variable (in statistics) that takes on numerical values for a characteristic being measured.

• Real zeros

Zeros of a function that are real numbers.

• Reflection across the x-axis

x, y and (x,-y) are reflections of each other across the x-axis.

• Secant

The function y = sec x.

• Standard form of a polynomial function

ƒ(x) = an x n + an-1x n-1 + Á + a1x + a0

• Stem

The initial digit or digits of a number in a stemplot.

• Sum identity

An identity involving a trigonometric function of u + v

• Variance

The square of the standard deviation.