- 9-8.1: Uranium Fission Problem: When a uranium atom splits (fissions), it ...
- 9-8.2: Archery 3: An expert archer has the probabilities of hitting variou...
- 9-8.3: Sales Incentive Problem: Calvin is a salesperson at a car dealershi...
- 9-8.4: Seed Germination Problem: A package of seeds for an exotic tropical...
- 9-8.5: Batting Average Problem: Jackie Robinsons highest batting average w...
- 9-8.6: Expectation of a Binomial Experiment: Suppose you conduct a random ...
- 9-8.7: Multiple-Choice Test 2: Suppose that you are taking your College Bo...
- 9-8.8: Accident/Illness Insurance Problem: Some of the highest-paid mathem...
- 9-8.9: Life Insurance Project, Part 1: Functions of random variables are u...
- 9-8.10: Life Insurance Project, Part 2: A group of 10,000 people, each now ...
Solutions for Chapter 9-8: Mathematical Expectation
Full solutions for Precalculus with Trigonometry: Concepts and Applications | 1st Edition
Arc length formula
The length of an arc in a circle of radius r intercepted by a central angle of u radians is s = r u.
Boxplot (or box-and-whisker plot)
A graph that displays a five-number summary
A logarithm with base 10.
See Geometric sequence.
Facts collected for statistical purposes (singular form is datum)
The process of utilizing general information to prove a specific hypothesis
An identity involving a trigonometric function of u - v
equation of a hyperbola
(x - h)2 a2 - (y - k)2 b2 = 1 or (y - k)2 a2 - (x - h)2 b2 = 1
Focal length of a parabola
The directed distance from the vertex to the focus.
Increasing on an interval
A function ƒ is increasing on an interval I if, for any two points in I, a positive change in x results in a positive change in.
Law of sines
sin A a = sin B b = sin C c
The notation dy/dx for the derivative of ƒ.
Any of the real numbers in a matrix
See Principal nth root
An interval that does not include its endpoints.
A square matrix with zero determinant
Standard form of a polar equation of a conic
r = ke 1 e cos ? or r = ke 1 e sin ? ,
Term of a polynomial (function)
An expression of the form anxn in a polynomial (function).
The rectangular portion of the coordinate plane specified by the dimensions [Xmin, Xmax] by [Ymin, Ymax].
The x-value of the left side of the viewing window,.