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cricket20 [7]
3 years ago
6

What is the difference between the following two regression​ equations? ModifyingAbove y with caret equals b 0 plus b 1 xy=b0+b1

x y equals beta 0 plus beta 1 xy=β0+β1x Choose the correct answer below. A. The first equation is for sample​ data; the second equation is for a population. B. The first equation is for a​ population; the second equation is for sample data.
Mathematics
1 answer:
Leona [35]3 years ago
5 0

Answer:

A. The first equation is for sample​ data; the second equation is for a population.

Step-by-step explanation:

The first equation is y = b_0 + b_1x , this is the equation for sample data as the intercept (b_0) and the slope parameter(b_1)  both are calculated then we have got this and these values are not taken as given.

The Second equation is y = \beta _0 +\beta _1x , this is the equation for population data as we can't calculate these \beta _0 and \beta _1 as we take these values as given and also we do testing for \beta parameter using t test and it is sure that testing is always done on population data not on sample data.

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Can someone help me with B? I’m really bad at this kind of stuff. I need help ASAP
Vinil7 [7]

Answer:

D = .44P

Step-by-step explanation:

We need to find the slope of the line

m = (y2-y1)/ (x2-x1)

Using two points

m = (22-4.4) /(50-10)

   = 17.6/40

   = .44 lb/ in^2 ft

We can use the point slope form of the equation

y-y1 = m(x-x1)  where y=D and x=P

D-4.4 = .44 (P-10)

Distribute

D-4.4 = .44P - 4.4

Add 4.4 to each side

D -4.4+4.4 = .44P -4.4+4.4

D = .44P

8 0
3 years ago
Read 2 more answers
Which of the following is 10 times what the 5 represents in 8,145
Alexxx [7]

Answer:

A

Step-by-step explanation:

5 in 8145 is in the ones place. Hence 10 times of that

= 10 × 5

= 50

Hence answer is <u>A</u><u>.</u>

7 0
3 years ago
Read 2 more answers
**Solve by Elimination<br> 3 + 2x - y = 0<br> -3-7y = 10x<br> 7) x =<br> 8) y =
timofeeve [1]
Answer:

Explanation:

3 + 2x - y = 0
Or 2x - y = -3 (1)

-3-7y = 10x
Or -10x - 7y = 3 (2)

2x - y = -3 (1)
-10x - 7y = 3 (2)
———————

Multiply 5 to (1)

5(2x - y = -3)
-10x - 7y = 3
———————
10x - 5y = -15
-10x - 7y = 3
———————
-12y = -12
y = -12/-12
y = 1

Plug y value in (1)

2x - 1 = -3
2x = -3 + 1
2x = -2
x = -2/2 = -1

Therefore, x = -1 and y = 1
7 0
2 years ago
X intercepts for the equation y=-3(x-2)^2+1
nignag [31]

Answer:

Step-by-step explanation:

5 0
3 years ago
Write the inequality to represent the situation: "x can be no more than 5." Copy/paste the symbols if you need to: &lt; &gt; ≤ ≥
Sophie [7]

Answer:

x < 5

Step-by-step explanation:

Hi,

If you have a line under the < or > sign, it means x can be less than OR EQUAL TO, since x has to be less than 5, neither of those signs can work. Now, < means less than and > means greater than. For this, x < 5 is the correct answer because we know that x has to be less than 5.

I hope this helps :)

6 0
3 years ago
Read 2 more answers
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