
Concept explainers
a.
To find a
a.

Answer to Problem 11PPS
Explanation of Solution
Given:
The given data is
Calculation:
Using the graphing calculator, after plotting the given data in the table, the regression equation and
The regression equation is
The coefficient of correlation is the value of the variable r.
b.
To use the regression equation to predict the sales in 2015.
b.

Answer to Problem 11PPS
Explanation of Solution
Given:
The given data is
Calculation:
Just substitute the value of
c.
To remove the outlier from the data set and find a new regression equation and
c.

Answer to Problem 11PPS
Explanation of Solution
Given:
The given data is
Calculation:
The regression equation is
The coefficient of correlation is the value of the variable r.
d.
To predict the sales in 2015 using new regression equation.
d.

Answer to Problem 11PPS
Explanation of Solution
Given:
The given data is
Calculation:
Just substitute the value of
e.
To compare the correlation coefficients for the two regression equations and tell which is more accurate.
e.

Answer to Problem 11PPS
The second prediction is more accurate.
Explanation of Solution
Given:
The given data is
Calculation:
The coefficient of correlation for the first regression equation is
Chapter 2 Solutions
Algebra 2
Additional Math Textbook Solutions
Thinking Mathematically (6th Edition)
Introductory Statistics
Elementary Statistics: Picturing the World (7th Edition)
Basic Business Statistics, Student Value Edition
College Algebra with Modeling & Visualization (5th Edition)
- Solve the following system of equations: 50x+20y=1800 10x+3y=300arrow_forward> > > we are hiring Salesforce Admin Location: Remote Key Responsibilities: Administer Salesforce Sales & Revenue Cloud (CPQ & Billing) Configure workflows, validation rules & dashboards Automate processes using Flows & Process Builder Collaborate with Sales, Finance & Marketing teams Manage user roles & security Apply: Hr@forcecraver.comarrow_forwardAnswer this questionarrow_forward
- 1. vector projection. Assume, ER1001 and you know the following: ||||=4, 7=-0.5.7. For each of the following, explicitly compute the value. འབ (a) (b) (c) (d) answer. Explicitly compute ||y7||. Explain your answer. Explicitly compute the cosine similarity of and y. Explain your Explicitly compute (x, y). Explain your answer. Find the projection of onto y and the projection of onto .arrow_forward2. Answer the following questions using vectors u and v. --0-0-0 = find the the cosine similarity and the angle between u and v. འརྒྱ (a) (b) find the scalar projection of u onto v. (c) find the projection of u onto v. (d) (e) (f) find the scalar projection of onto u. find the projection of u onto u. find the projection of u onto and the projection of onto . (Hint: find the inner product and verify the orthogonality)arrow_forwardPlease type out answerarrow_forward
- The function f(x) = log x is transformed to produce g(x) = log (x) – 3. Identify the type of transformation and describe the change. Please type out answerarrow_forwardEach graph below is the graph of a system of three linear equations in three unknowns of the form Ax = b. Determine whether each system has a solution and, if it does, the number of free variables. A. O free variables ✓ B. no solution C. no solution D. no solution E. 1 free variable F. 1 free variablearrow_forwardSolve the following systems of equations and show all work.y = x2 + 3y = x + 5 Please type out answerarrow_forward
- Algebra and Trigonometry (6th Edition)AlgebraISBN:9780134463216Author:Robert F. BlitzerPublisher:PEARSONContemporary Abstract AlgebraAlgebraISBN:9781305657960Author:Joseph GallianPublisher:Cengage LearningLinear Algebra: A Modern IntroductionAlgebraISBN:9781285463247Author:David PoolePublisher:Cengage Learning
- Algebra And Trigonometry (11th Edition)AlgebraISBN:9780135163078Author:Michael SullivanPublisher:PEARSONIntroduction to Linear Algebra, Fifth EditionAlgebraISBN:9780980232776Author:Gilbert StrangPublisher:Wellesley-Cambridge PressCollege Algebra (Collegiate Math)AlgebraISBN:9780077836344Author:Julie Miller, Donna GerkenPublisher:McGraw-Hill Education





