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
zavuch27 [327]
3 years ago
5

Suppose the correlation between height and weight for adults is 0.80. What proportion (or percent) of the variability in weight

can be explained by the relationship with height
Mathematics
1 answer:
gulaghasi [49]3 years ago
8 0

Answer: 64% of the variability in weight can be explained by the relationship with height.

Step-by-step explanation:

  • In statistics, Correlation coefficient is denoted by 'r' is a measure of the strength of the relationship between two variables.
  • Coefficient of determination, r^2, is a measure of variability in one variable can be explained variation in the other.

Here, r= 0.80

\Rightarrow\ r^2= (0.80)^2=0.64

That means 64% of the variability in weight can be explained by the relationship with height.

You might be interested in
The distance between Eagle Lake and Swallow Lake on a map is 9 cm. The scale of the map is 4 cm = 2 km.
Sedbober [7]

Answer:

4½ km

Step-by-step explanation:

2 cm= 1 km

1 cm= ½ km

4cm×2km = 8cm

8 cm (4 km) + 1 cm (½ km) = 9 cm

9 cm/ 4 ½ km

4 0
3 years ago
Let u = <-4, 3>. Find the unit vector in the direction of u, and write your answer in component form. (2 points)
lana66690 [7]

Answer:  < -4/5,  3/5>

This is equivalent to writing < -0.8, 0.6 >

======================================================

Explanation:

Draw an xy grid and plot the point (-4,3) on it. Draw a segment from the origin to this point. Then draw a vertical line until reaching the x axis. See the diagram below.

We have a right triangle with legs of 4 and 3. The hypotenuse is \sqrt{4^2+3^2} = \sqrt{16+9} = \sqrt{25} = 5 through use of the pythagorean theorem.

We have a 3-4-5 right triangle.

Therefore, the vector is 5 units long. This is the magnitude of the vector.

Divide each component by the magnitude so that the resulting vector is a unit vector pointing in this same direction.

Therefore, we go from < -4, 3 > to < -4/5,  3/5 >

This is equivalent to < -0.8, 0.6 > since -4/5 = -0.8 and 3/5 = 0.6

Side note: Unit vectors are useful in computer graphics.

6 0
2 years ago
The volume of liquid in a beaker decreases at a rate of 3.25 mL/h. What is the change in the volume of the liquid in the beaker
luda_lava [24]
The volume of the beaker after is 6 hours is 19.5
8 0
3 years ago
Read 2 more answers
What is the percent of decrease from 20 to 19?
natita [175]
20-19= 1 1% had decrease answer is -1%
7 0
3 years ago
Read 2 more answers
3 (x + 3) + 5 = 3x + 1 + 4
MrRa [10]

\text{Solve for x:}\\\\3 (x + 3) + 5 = 3x + 1 + 4\\\\\text{Use the distributive property}\\\\3x+9+5=3x+1+4\\\\\text{Combine like terms}\\\\3x+14=3x+5\\\\\text{Subtract 3x from both sides}\\\\14=5\\\\\boxed{\text{Answer: No solution}}

4 0
3 years ago
Other questions:
  • Write the absolute value inequality in the form x−b ≤c or x−b ≥c that has the solution set −1≤x≤3.
    13·1 answer
  • What is the answer. for /10 to the 3rd power
    12·2 answers
  • Sarah saw seven sharks while swimming now how many S is in the sentence
    6·1 answer
  • Find the Circumference and area of the circle with the center C=(-1,2) and a point on the circle A(4,-1). Round to the nearest t
    14·1 answer
  • BRAINLIEST + POINTS! Help needed and explanation please!
    10·2 answers
  • If a * b + 5 *a + 3 * b + 15= 24 and a+ 3 =6 then what is the value of a+b​
    13·1 answer
  • Θ এর কোন মানের জন্য sin2θ+cos2θ= 1 হয় ?​
    9·1 answer
  • Helllpppppp please
    12·2 answers
  • A traffic helicopter descends 153 meters to be 445 meters above the ground, as illustrated in the
    11·1 answer
  • The oblique prism below has an isosceles right triangle
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!