Answer: c. 91
Step-by-step explanation:
Given : A linear regression equation was computed to predict the final exam score from score on the midterm exam.
The equation of the least squares regression line was
, where y= the final exam score
x= the midterm exam score.
if Joe score a 90 on the midterm exam, the put x= 90 in the above eqaution , we get
Hence, the predicted value of his score on the final exam would be 91.
Therefore , the correct answer is c. 91 .
Answer:
B. A rectangle, 4 in by 3 in
Step-by-step explanation:
The foam has the shape of a cuboid with base of 10 in by 4 in and height of 3 in.
The foam has a front elevation of a rectangle with dimension of 4 in by 3 in. It has a left elevation of dimension 10 in by 3 in and a plan of dimension 10 in by 4 in.
If the foam is cut along the red line, the exposed face would be the same as the shape of the front elevation. Hence the shape of the cross section would be a rectangle with dimension of 4 in by 3 in.
