Question

An engineering student has designed a new cloths dryer. X: temperature setting in ∘F, Y: actual interior temperature during cycle ∘F. She has collected the following n=5 samples:

X	Y
140	170
145	174
150	172
155	178
160	176

Find the correlation coefficient, r.

a.) 0.80

b.) 0.70

c.) 0.90

d.) 0.70

Following question 10 about the new cloths dryer (given the table):

What is the fitted simple linear regression equation?

In the answer choices, Y^ is representing the estimated Y.

a. Y^ =126 + 0.32X

b. Y^ =126 - 0.32X

c. Y^ =226 + 0.42X

d. Y^ =226 - 0.42X

Following question 10 about the new cloths dryer (given the table):

Suppose, we want to test the following hypothesis:

At α = -.05, what is the value of the test statistic?

Group of answer choices

a. 2.31

b. 3.31

c. 1.31

d. 4.41

Answer 1

The statistical software output for this problem is :

a) correlation coefficient, r = 0.80

a. Y^ =126 + 0.32 X

a) The test statistic = 2.31