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
ehidna [41]
3 years ago
14

A college counselor wants to determine if the number of hours spent studying for a test can be used to predict the grades on a t

est. Identify the predictor variable and response variable.
Mathematics
2 answers:
Eva8 [605]3 years ago
8 0

Answer:

The predictor variable is the number of hours spent studying for a test.

The response variable is the grades on a test.

Step-by-step explanation:

Linear regression depicts the relationship between two variables by fitting a linear equation to experimental data values. One variable is known as an predictor (independent) variable, and the other is known as a response (dependent) variable.

The general form of a linear regression line is,

\hat Y = a + bX

Here,

<em>X</em> = predictor variable

Y = response variable.

The variable <em>b</em> = slope of the line, and <em>a</em> = intercept (the value of y when x = 0).

The main purpose of forming a regression line is to estimate or predict the value of the response variable for different values of the predictor variables.

The predictor variable is changes to observe the changes in the response variable.

In this case the college counselor wants to determine if the number of hours spent studying for a test can be used to predict the grades on a test.

The predictor variable is the number of hours spent studying for a test.

The response variable is the grades on a test.

Because the counselor is using the number of hours studied to estimate the marks obtained.

vfiekz [6]3 years ago
7 0

Answer:

Predictor variable = The number of hours spent studying for a test

Response variable = The grades on a test

Step-by-step explanation:

You might be interested in
How to Solve for x. -1/2 (x + 2) + 1 1/2 x = 3 ​
kondaur [170]
Hope this helps :)))
5 0
2 years ago
in the lab, Tammy has two solutions thta contain alcohol and is mixing them with each other. She use twice as much Solution A as
Dmitry_Shevchenko [17]

Answer:

She uses 200 milliliters of solution B

Step-by-step explanation:

Notice that there are two unknowns in this problem: 1) the amount of solution A that is being used, and 2) the amount of solution B being used. We can name such unknowns with letters to facilitate our work:

Amount of solution A to be used = A

Amount of solution B to be used = B

So, since we need to find two unknowns, we need to create a system of two equations to solve them.

Our first equation can be obtained from the sentence: "She uses twice as much Solution A as Solution B," which written in mathematical form is:

A = 2 B

The second equation we can build from the information of the amount of alcohol in each solution that combined will add up to 104 milliliters of alcohol in the mixture. Knowing the percent of alcohol in each solution, we can write an equation for the amount of alcohol:

0.19 A + 0.14 B = 104

Now we can use our first equation to substitute A in terms of B in the second equation:

0.19 (2 B) + 0.14 B = 104

0.38 B + 0.14 B = 104

0.52 B = 104

B = 104 / 0.52

B = 200 milliliters

4 0
3 years ago
My metric bolt measures .780 with calipers over the threads what size is it
attashe74 [19]
Bolts are usually classified in terms of two types of measurements: the metric system and the imperial system. In calipers, the metric system is in units of millimeters, while the imperial system is in units of inches. For example, when a bolt is sized as 12 × 1.25 in the metric system, that means the bolt thread diameter measures 12 mm, and the thread pitch measures 1.25 mm.

So, if your metric bolt measures 0.78 over the threads, that means that the size of the bolt is 0.78 mm in thread pitch. The attached picture shows how you measure the thread pitch. 

5 0
3 years ago
Theo bought two hot dogs and two sodas for $4.00. At the same concession stand, Vicky bought three hot dogs and a soda for $4.50
miss Akunina [59]
The hot dog costs 50cents
8 0
3 years ago
Read 2 more answers
Which number has a terminating decimal expansion? А. 12 / B. 12 C. D. 11​
Scorpion4ik [409]

Answer:

b or d

c

Step-by-step explanation:

i hope work

yon lang kaya ko

4 0
3 years ago
Other questions:
  • Solve the answer y=6x−8<br> Thanks for helping
    6·1 answer
  • What are to composite Numbers that are relatively prime
    14·1 answer
  • What is the answer for 1/5(g - 10)
    15·1 answer
  • I need someone really good in math to help me please
    9·1 answer
  • Add the polynomials. <br> (7y^2+2y-9)+(-3y^2-y) = ?
    11·1 answer
  • Slope intercept of (2,1) and (4,0)
    9·1 answer
  • Lady Gaga bought a package of pens for $2.25 and some pencils that cost $.30 each she paid a total of $4.65 for these items befo
    6·1 answer
  • Cos theta Root over 1 - cos square theta​
    11·1 answer
  • If EF=2x−12, FG=3x−15, and EG=23, find the value of FG
    13·1 answer
  • Y=3x-4 and y= -x+2 to find the system of equations
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!