1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
8090 [49]
3 years ago
7

The regression equation Credits = 17.9 − 0.09 Work was estimated from a sample of 21 statistics students. Credits is the number

of college credits taken and Work is the number of hours worked per week at an outside job. (Round your answers to 1 decimal place.) (a) Choose the correct statement. An increase in the number of hours worked per week increases the expected number of credits. A decrease in the number of hours worked per week decreases the expected number of credits. An increase in the number of hours worked per week decreases the expected number of credits. (b) Choose the right option. The intercept is not meaningful as a student who works outside may not earn any credits. The intercept is meaningful as a student may not have a job outside of school. (c) If Work = 0, then Credits = . If Work = 60, then Credits = .
Mathematics
1 answer:
Readme [11.4K]3 years ago
4 0

Answer:

Step-by-step explanation:

Hello!

Given the regression equation

Credit= 17.9 - 0.09 Work

That was estimated from a sample of n= 21 statistic students.

Y: number of college credits taken

X: number of hours worked per week at an outside job

a)

The estimation for the slope is -0.09

As you see the estimated slope is negative, this means that the association between the two variables is indirect or inverse. Meaning, when the number of Work increases, the number of Credit decreases. (negative regression)

The correct option is: "An increase in the number of hours worked per week decreases the expected number of credits."

b)

The estimation for the intercept is 17.9

In general, the intercept is the estimated average of Y when X=0. You can interpret the intercept of this equation as "the value of Credits earned by a student that does not work outside of school"

The correct option is: " The intercept is meaningful as a student may not have a job outside of school. "

c)

If Work=0, then Credit= 17.9 (As explained in item b)

By replacing the value in the equation: Credit= 17.9 - 0.09 * 0= 17.9

If Work=60, you replace it in the equation and:

Credit= 17.9 - 0.09 Work= 17.9-0.09*60= 12.5

If the student works 60 hs outside of school it is expected that he takes 12.5 college credits.

I hope this helps!

You might be interested in
Jasmine cooked 1 5/6 kg of rice. Alice cooked 5/8 kg more than Jasmine. a. How many kg of rice did Alice cook? b. How many kg of
larisa86 [58]

Answer:Amount of rice cooked by Alice =2 11/24kg

Together  Alice and Jasmine cooked 4 7/24kg of rice

Step-by-step explanation:

Amount of rice cooked by Jasmine =1 5/6 kg

Amount of rice cooked by Alice = 5/8 kg more than Jasmine

=1 5/6 kg+ 5/8 kg

=1 (20 +15) /24

=1 35/24

=1 +1 11/24

= 2 11/24 kg

Together  Alice and Jasmine cooked 1 5/6 kg + 2 11/24kg =

=3 20 +11/24

=3 31/24=3 +1 7/24

=4 7/24kg

6 0
3 years ago
Which two values are located at the same point on a number like . 4/1 and 4 or 1/3 and 3 or 8:8 and 8 or 6/2 and 4
kramer
The answer is 4/1 and 4
4 0
3 years ago
Read 2 more answers
How many steel rods are in a staircase frame with 12 steps?
kolbaska11 [484]
180 steel rods to be exact
3 0
2 years ago
A person is looking from a car to the top of a building. The angle of elevation to the top of the building from the car
MrRa [10]

Answer:124.29ft (approximately 125ft)

Step-by-step explanation:

4 0
2 years ago
You notice that the client's bedroom is also proportional to a larger office that you have already completed. The diagram below
9966 [12]

Answer:

D. 75

Step-by-step explanation:

8 0
2 years ago
Other questions:
  • How many months are in 7540 years?
    12·1 answer
  • An open-top box is to be made from a 42-inch by 48-inch piece of plastic by removing a square from each corner of the plastic an
    9·1 answer
  • A boy has 11 coins in dimes and quarters. Their value is $1.70. How many of each does he have? Which of the following equations
    13·2 answers
  • Ice sheet movement rates have varied from about 50 to 320 meters per year for the margins of the ice sheet advancing from the Hu
    5·1 answer
  • Write the slope-intercept-form of an equation that passes through the point (-2,3), and is parallel to y=-x+5.
    7·1 answer
  • Help i need help on this question​
    14·1 answer
  • A car was traveling 86 kilometers per hour.
    5·1 answer
  • NEEEEEEED HEEEEEEEELP !!!!!!!!!!!!!!!!! 13 POINTSSSSSS
    10·2 answers
  • Solve each system by elimination.
    13·1 answer
  • Due in 1 hour <br> screenshot below
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!