An engineer wants to predict the value for y when x = 4.
An engineer wants to predict the value for y when x = 4.5, using the following data set.
.
An engineer wants to predict the value for y when x = 4.
Get Your Custom Essay on this Assignment/Homework
Order Essay
x
y
z =
ln y
x
y
z =
ln y
1
0.2
−1.61
6
2.3
0.83
2
0.3
−1.20
7
2.9
1.06
3
0.5
−0.69
8
4.5
1.50
4
0.5
−0.69
9
8.7
2.16
5
1.3
0.26
10
12.0
2.48
a. Construct a scatterplot of the points (x, y).
b. Should the least-squares line be used to predict the value of y when x = 4.5? If so, compute the least squares line and the predicted value. If not, explain why not.
c. Construct a scatterplot of the points (x, z), where z = ln y.
d. Use the least-squares line to predict the value of z when x = 4.5. Is this an appropriate method of prediction? Explain why or why not.
e. Let z denote the predicted value of z computed in part (d). Let = e . Explain why is a reasonable predictor of the value of y when x = 4.5.
Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.
You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.
Read moreEach paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.
Read moreThanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.
Read moreYour email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.
Read moreBy sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.
Read more