The scatter plot shows the number of hours worked, x, and the amount of money spent on entertainment, y, by each of 23 students.555045.Amount of40-money spent on35entertainment30-Xxx(in dollars)2520-15+x10-5.10121416182022Number of hours workedUse the equation of the line of best fit, y=1.82x+11.36, to answer the questions below.Give exact answers, not rounded approximations.(a) What is the predicted amount of money spent onentertainment for a student who works 10 hours?(b) What is the predicted amount of money spent onentertainment for a student who doesn't work any hours?(c) For an increase of one hour in time worked, what is thepredicted increase in the amount of money spent onentertainmnent?

Given Equation y=1.82x+11.36 Where y= money spent on entertainment. x = the number of house worked

Answered: Use the equation of the line of best…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

See similar textbooks

Similar questions

b. Water that is initially contaminated with a concentration of 9 milligrams of pollutant per liter of water is subjected to a cleaning process. The cleaning process is able to reduce the pollutant concentration by 25% every 2 hours. Let C(t) = 9 be the concentration, in milligrams of pollutant per liter of water t hours after the purification process begins. Find the concentration of pollutant in the water after 5 hours. Please round your answer to two decimal places. A) 2.14 mg/1 B) 4.38 mg/l C) 0.0088 mg/l D) 0.28 mg/l
A regression was run to determine if there is a relationship between hours of TV watched per day (x) and number of situps a person can do (y).The results of the regression were:y=ax+b a=-0.818 b=21.295 r2=0.49 r=-0.7 Use this to predict the number of situps a person who watches 7.5 hours of TV can do (to one decimal place)
A researcher studied the relationship between family income and the amount of moneyspent on an auto mobile. She calculated that r2 = 45%. WHich is th correct interpretation?
Libya has average precipitation of 56 mm per year. On a random month in Libya, what is the expected rainfall as measured in inches per month? Use your E(aX+b) formula, and the fact that 1 mm is equal to 0.0393701 inches, and 12 months in a year. (Round your answers to two decimal places; ex: 1.23).
You are asked to estimate the model wage=B1+B2 EDU+ B3 EDU? where wage is the hourly wage ($) and EDU is the number of years of education. OLS results from a sample of 1000 university graduates are reported below: Wage=9.79-1.20 EDU+0.089 EDU2; R-square%-D0.23 se (2.67) (0.40) (0.09) Test the hypothesis that the expected effect of an extra year of education on hourly wage of an individual with 12 years of education is $1 against the alternative that it is less than $1 at 5% significance level (show all work). You are given the se(b2+2"b3 EDU)=D 0.045 Paragraph BI II
A regression was run to determine if there is a relationship between hours of TV watched per day (x) and number of situps a person can do (y). The results of the regression were: y=a+bx a=28.724 b=-1.299 r2=0.388129 r=-0.623 Use this to predict the number of situps a person who watches 7 hours of TV can do (to one decimal place) Submit Question
Find the t –value from 20 degrees of freedom with alfa = 10% in two tails
if the equation of the line of best fit is y=3.87x+15.52 for an increase of one hour in the time spent studying what is the predicted increase in the midterm score
Table 9.2 Average Returns for Bonds 1950 to 1959 1960 to 1969 1970 to 1979 1980 to 1989 1990 to 1999 2000 to 2009 1950 to 1959 1960 to 1969 1970 to 1979 1980 to 1989 1990 to 1999 2000 to 2009 Average Average Average Table 9.4 Annual Standard Deviation for T-Bills Decade 1950s 1960s 1970s 1980s 1990s 2000s 8.2 Average Average 4.5 2.9 Average T-Bills 2.3% 4.2 6.4 Use the tables above to calculate the coefficient of variation of the risk-return relatic (Round your answers to 2 decimal places.) Cov 0.71 T-Bills 0.9% 1.4 2.2 2.5 1.3 2.1
Here are two sets of bivariate data with the same response variable. The first contains the variables x & y. The second contains the variables w & y | y w y 25.3 43.9 68.8 36.7 43.8 56.7 57 55 49.2 61.3 27.9 52 57.4 69.3 48 | 50.5 33.7 47.3 58.3 49.2 46.3 56 46.6 34.4 67.1 75.8 35.1 48.3 25.7 43.4 19 76.8 47.2 57.9 7.3 56.8 37.5 57.4 32.9 56.2 44.8 60.4 43.8 49 29.7 38.5 26.4 | 60.9 42.8 53.6 55.6 49.4 60.3 69.7 53.9 55 53.2 67.1 47.8 42.7 57.4 66.3 25 54.8 45.5 57.6 13.9 65 42 51.6 69.5 43.6 38.9 54.8 79.5 29
The following are the summations of the Age(X) and Blood Pressure (Y). n = 10 ∑X = 345 ∑Y = 819 ∑XY = 47,634 ∑X2 = 20,399 a. What is the intercept of the regression formula? b. What is the slope of the regression formula? c. What is the value of Y when X = 60
In the last three years, there have been changes of 55%, 3% and 2% in the production amount of a good, respectively. What is the geometric mean of the annual rate of change?

SEE MORE QUESTIONS

Recommended textbooks for you

Advanced Engineering Mathematics

Advanced Math

ISBN:

9780470458365

Author:

Erwin Kreyszig

Publisher:

Wiley, John & Sons, Incorporated

Numerical Methods for Engineers

Advanced Math

ISBN:

9780073397924

Author:

Steven C. Chapra Dr., Raymond P. Canale

Publisher:

McGraw-Hill Education

Introductory Mathematics for Engineering Applicat…

Advanced Math

ISBN:

9781118141809

Author:

Nathan Klingbeil

Publisher:

WILEY

Advanced Engineering Mathematics

Advanced Math

ISBN:

9780470458365

Author:

Erwin Kreyszig

Publisher:

Wiley, John & Sons, Incorporated

Numerical Methods for Engineers

Advanced Math

ISBN:

9780073397924

Author:

Steven C. Chapra Dr., Raymond P. Canale

Publisher:

McGraw-Hill Education

Introductory Mathematics for Engineering Applicat…

Advanced Math

ISBN:

9781118141809

Author:

Nathan Klingbeil

Publisher:

WILEY

Mathematics For Machine Technology

Advanced Math

ISBN:

9781337798310

Author:

Peterson, John.

Publisher:

Cengage Learning,

Basic Technical Mathematics

Advanced Math

ISBN:

9780134437705

Author:

Washington

Publisher:

PEARSON

Topology

Advanced Math

ISBN:

9780134689517

Author:

Munkres, James R.

Publisher:

Pearson,

SEE MORE TEXTBOOKS