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Making Predictions from a Least-Squares Regression Line Answers

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1
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What are the slope and y-intercept of the regression line?

A
slope: 0.010, y-intercept: 2.515
B
slope: 0.010, y-intercept: x
C
slope: x, y-intercept: 0.010
D
slope: 2.515, y-intercept: 0.010
2
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1 100 ✔ 144802,456

A
1
B
100
C
✔ 144
D
802,456
3

✔ Prediction 1Prediction 2

A
✔ Prediction 1
B
Prediction 2
4

Complete the statement based on the information.

Answers:
For every -square-foot increase, the predicted home price is predicted to increase by $.:1
$.:144
5

What is the predicted store profit if 0 computers are sold for the day?

A
‒$150
B
‒$126
C
$0
D
$176
6

Which statements are true regarding this model? Check all that apply.

A
For every one year in age, the price is predicted to increase by $930.
B
For every one year in age, the price is predicted to decrease by $930.
C
If the car is new, the car is predicted to cost $12,338.
D
If the age of the car is 1 year, the price is predicted to be $12,338.
E
The costs of the cars cannot be predicted.
7

Question text not available

Answer:

6.298

8

Question text not available

Answer:

8,618

9

50 minutes ✔ 70 minutes75 minutes 100 minutes

A
50 minutes
B
✔ 70 minutes
C
75 minutes
D
100 minutes
10

The regression equation is ŷ = 67.79 + 6.72x. How many participants are needed in order for the school to raise $800?

A
75
B
108
C
109
D
456
11

Use the scatterplot to complete the statements.

Answers:
Prediction 1: If the duration of an event is 4.5 minutes, guests can expect about minutes until the next event.:82
Prediction 2: If a future event is expected to last 6 minutes, guests can expect to wait 95 minutes until the next event.:more than
Which prediction would you consider to have a higher confidence level?:Prediction 1
12

exactly less than ✔ more than

A
exactly
B
less than
C
✔ more than
13

Use the scatterplot to complete the statements.

Answers:
Prediction 1: If the duration of an event is 4.5 minutes, guests can expect about minutes until the next event.:82
Prediction 2: If a future event is expected to last 6 minutes, guests can expect to wait 95 minutes until the next event.:more than
Which prediction would you consider to have a higher confidence level?:Prediction 1

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