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Licemer1 [7]
3 years ago
12

In a simple linear regression analysis, the correlation coefficient ( ) and the slope (m) _____ have the same sign. a. always b.

sometimes c. never
Mathematics
1 answer:
patriot [66]3 years ago
5 0

Answer:

a. always

Step-by-step explanation:

In a simple linear regression, the slope measures the steepness of the linear relationship between the two variables, it ranges from (-∞ to +∞ ) while the correlation coefficient measures the tightness of the linear relationship between the two variables, it ranges from (-1 to +1 ).

So the correlation coefficient and the slope will always have the same sign though their values might differ.

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What is the value of F ?
likoan [24]

Answer:

29

Step-by-step explanation:

This is because this is a complementary angle so it equals 90 degrees. If you already have 61 degrees then you subtract 90 and 61 to get f=29 degrees

4 0
3 years ago
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A company manufactures aluminum mailboxes in the shape of a box with a half-cylinder top. The company will make 1960 mailboxes t
MaRussiya [10]

Answer:

  7088 m²

Step-by-step explanation:

The area of the half-cylinder is half the area of a cylinder with the same dimensions. This half-cylinder has a radius of 0.3 m and a length of 0.8 m, so its area is ...

  A = πr(r +l) = π(0.3 m)(0.3 m+0.8 m) = 0.33π m² ≈ 1.0362 m²

The area of the bottom part of the box is the sum of its lateral area and its base area.

  lateral area = Ph = (2(0.6m +0.8m))(0.75 m) = 2.1 m²

  base area = lw = (0.8 m)(0.6 m) = 0.48 m²

The total area is then ...

  total area = half-cylinder area + lateral area + base area

  = 1.0362 m² +2.1 m² +0.48 m²

  = 3.6162 m²

__

The area for 1960 mailboxes will be 1960 times this area, or ...

  area for week's production = 1960 × 3.6162 m² = 7087.752 m²

It will take about 7088 square meters of aluminum to make these mailboxes.

5 0
4 years ago
How to solve 8× 10 rasied to the power of 4
Sunny_sXe [5.5K]

Answer: 80,000

Step-by-step explanation: 8x(10x10x10x10)=8x10,000=80,000

6 0
3 years ago
Three people build a rectangular shed 8 ft wide, 6 ft long, and 7 ft high. How many cubic feet does the shed contain?
dusya [7]
8x6x7= 336
Your answer is 336 ft^3
7 0
4 years ago
Find the value of the variable if P is between J & K. A) JP = 8z - 17 B) PK = 5z + 37 C) JK = 17z - 4
Daniel [21]
<span>We cannot deduce about the exact location of P between J and K. But we can conclude: segment JP + segment PK = line JK.
</span><span>JP + PK = JK.
</span><span>Substitute first each.
(8z - 17) + (5z + 37) = 17z - 4
Combine like terms.
13z + 20 = 17z - 4
Isolate the variable z.
4z = 24
z = 6
The value of the variable z is then 6 units.</span>
3 0
3 years ago
Read 2 more answers
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