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
Ahat [919]
4 years ago
15

A history instructor has given the same pretest and the same final examination each semester. He is interested in determining if

there is a relationship between the scores of the two tests. He computes the linear correlation coefficient and notes that it is 1.15. What does this correlation coefficient value tell the instructor?
Mathematics
1 answer:
maw [93]4 years ago
6 0

Answer:

The history instructor has made a computational error.

Step-by-step explanation:

We have that the data represents the linear correlation coefficient and notes it is 1.15

The linear correlation coefficient value which is 1.15 does tell the instructor that the history instructor has made a computational error due to the linear correlation coefficient value falls in the range -1 to +1.

Therefore, the history instructor has made a computational error.

You might be interested in
The Rodriguez family went out to dinner to Pasta, Pasta, Pasta! Mr Rodriguez ordered a meal for $6.25. Mrs Rodriguez ordered a m
ANTONII [103]
The answer is C. if you need the work I can give it to you
8 0
3 years ago
How do you solve 7x-2=x²-10? Can you show the steps please :)
nekit [7.7K]

Answer: x=−1 or x=8

Step-by-step explanation: 7x−2=x2−10

Learn how to solve quadratic equations

Khan Academy Video: Solving a quadratic by factoring

Khan Academy Video: Quadratic Formula 1

8 0
3 years ago
Plot C(-1,–7), D (6,–7), E(5,3), and F(5,-5) in a coordinate plane. Are CD and EF congruent?
N76 [4]

Answer:

No, they are not congruent

Step-by-step explanation:

By CD and EF being congruent, we want to know if they are equal.

What we can simply do here is to find the distance between the points present.

That is, the distance between C and D, the distance between E and F

To get the distances between two points , we use the following equation

D = √(x2-x1)^2 + (y2-y1)^2

For CD, we have

D = √(6 -(-1)^2 + (-7 + 7)^2

D = √(7)^2 = 7 units

For EF, we have

D = √(5-5)^2 + (-5-3)^2

D = √(-8)^2

D = √(64) = 8 units

This clearly shows that they are both not congruent

7 0
4 years ago
a skier is going down a slope that measures 3,500 feet long. by the end of the slope, the skier has dropped 1,400 vertical feet.
Marrrta [24]
Opposite over hypotenuse
1400/3500=0.4=40 degrees
I believe that is the answer
3 0
3 years ago
|-9t| = 9 what is the answer
KonstantinChe [14]
|-9t|=9\\
|9t|=9\\
9|t|=9\\
|t|=1\\
t=-1 \vee t =1
5 0
3 years ago
Other questions:
  • The domain of the following relation: R: {(−4, 3), (3, 6), (−2, 1), (3, 6)} is
    12·1 answer
  • What is answer to 4/5 - 1/10
    7·2 answers
  • What is the value of d?
    9·2 answers
  • How can the key features of an Expotential function be compared to tables and graphs
    10·2 answers
  • There are 320 rods in a mile, what part of a mile is 1 rod?
    14·2 answers
  • Two angles are supplementary. One angle is 40° more than three times the other. Find the measure of each angle.
    8·2 answers
  • The coordinates of the vertices of a recangle are (- 2, 3); (4, - 4)(4, 3) and (-2, -4 ). What are the dimensions of the rectang
    14·1 answer
  • PLEASE HELP DUE IN 2 HOURS!<br><br><br> 4.22 g/cm to lbs/ft
    13·2 answers
  • HELP I NEED THIS ANSWERED!!!!!!! MY MOM WILL KILL ME​
    10·1 answer
  • Find p.<br> 30°<br> O<br> 60°<br> 7 in
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!