Answer:
2.5
Step-by-step explanation:
The predicted regression equation is
y^=10+0.9x
where y= final exam score and x=first test score.
Also, we are given that Carla's final exam score y is 98 and Carla's first test score x is 95. We have to find residual for Carla.
Residual=Observed -predicted=y-y^
y^=10+0.9x
We know that Carla's first test score=x=95.
So,
y^=10+0.9(95)
y^=10+85.5
y^=95.5
Residual for Carla=y-y^=?
We know that Carla's final exam score=y=98.
So,
Residual for Carla=98-95.5=2.5
The answer is B Sometimes
Answer:
The number of different choices is 720.
Step-by-step explanation:
The sales representative must visit six cities.
The visits of cities are independent.
Number of choices for the first visit: 6 possibilities
Number of choices for the second visit: 5 possibilities (He just visited one city, the sales representative don't have to go again)
Number of choices for the Third visit: 4 possibilities
Number of choices for the fourth visit: 3 possibilities
Number of choices for the Fifth visit: 2 possibilities
Number of choices for the Sixth visit: 1 possibilities
To count all the possibilities we have to multiple all of them:
6x5x4x3x2x1=720 different choices
Answer:
the answer will be verified by an expert. Until then, talk to a tutor.
The line below are parallel so they have same slopes
If the green line has a slope of -1/2, the slope of the red line is also - 1/2
Answer
-1/2
