Concept explainers
a.
To Confirm: The given linear model is appropriate.
The given model is linear.
Given:
Calculation:
Press
Select required type, then press
Select Mark as
Press
Enter the data from the above table in the columns
Select the WINDOW as
Then press
The scatter plot is shown below:
Thus, the given model is appropriately linear.
b.
To Determine: The linear regression model.
The linear regression model is
Given:
Calculation:
Assume the regression model be
Here,
Substitute data for first
Subtract the above two equations and get,
Substitute the value of
Thus, the relation is:
c.
To Predict: The median U.S. female income in
The median U.S. female income in
Given:
Calculation:
Predict the median U.S. female income in
To predict the compensation for the year
Now, substitute
Thus, the female income in the year
Chapter 2 Solutions
PRECALCULUS:GRAPHICAL,...-NASTA ED.
- 6. Solve the system of differential equations using Laplace Transforms: x(t) = 3x₁ (t) + 4x2(t) x(t) = -4x₁(t) + 3x2(t) x₁(0) = 1,x2(0) = 0arrow_forward3. Determine the Laplace Transform for the following functions. Show all of your work: 1-t, 0 ≤t<3 a. e(t) = t2, 3≤t<5 4, t≥ 5 b. f(t) = f(tt)e-3(-) cos 4τ drarrow_forward4. Find the inverse Laplace Transform Show all of your work: a. F(s) = = 2s-3 (s²-10s+61)(5-3) se-2s b. G(s) = (s+2)²arrow_forward
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- Let the region R be the area enclosed by the function f(x) = ln (x) + 2 and g(x) = x. Write an integral in terms of x and also an integral in terms of y that would represent the area of the region R. If necessary, round limit values to the nearest thousandth. 5 4 3 2 1 y x 1 2 3 4arrow_forward(28 points) Define T: [0,1] × [−,0] → R3 by T(y, 0) = (cos 0, y, sin 0). Let S be the half-cylinder surface traced out by T. (a) (4 points) Calculate the normal field for S determined by T.arrow_forward(14 points) Let S = {(x, y, z) | z = e−(x²+y²), x² + y² ≤ 1}. The surface is the graph of ze(+2) sitting over the unit disk. = (a) (4 points) What is the boundary OS? Explain briefly. (b) (4 points) Let F(x, y, z) = (e³+2 - 2y, xe³±² + y, e²+y). Calculate the curl V × F.arrow_forward
- (6 points) Let S be the surface z = 1 − x² - y², x² + y² ≤1. The boundary OS of S is the unit circle x² + y² = 1. Let F(x, y, z) = (x², y², z²). Use the Stokes' Theorem to calculate the line integral Hint: First calculate V x F. Jos F F.ds.arrow_forward(28 points) Define T: [0,1] × [−,0] → R3 by T(y, 0) = (cos 0, y, sin 0). Let S be the half-cylinder surface traced out by T. (a) (4 points) Calculate the normal field for S determined by T.arrow_forwardI need the last answer t=? I did got the answer for the first two this is just homework.arrow_forward
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