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S_A_V [24]
4 years ago
13

Brainliest for the correct awnser!! A calculator was used to perform a linear regression on the values in the table. The results

are shown to the right of the table.What is the line of best fit?A.y = –0.984x + 13.5B.y = –2.9x + 13.5C.–0.984 = –2.9x + 13.5D.y = 13.5x – 2.9

Mathematics
1 answer:
marin [14]4 years ago
6 0

Answer:

Option B

Step-by-step explanation:

Taking the derivative of the residual function, then applying the normal equation:

[a; b] = (X'*X)^(X'*y)

with

X = [1 1; 2 1; 3 1; 4 1; 5 1]

X' is transpose of X

y = [11; 8; 4; 1; 0]

[a; b] =  [-2.9 13.5]

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A marketing research company needs to estimate which of two medical plans its employees prefer. A random sample of n employees p
Alex_Xolod [135]

Answer:

The point estimate for estimating the true proportion of employees who prefer that plan is 0.436

Step-by-step explanation:

A confidence interval has two bounds, a lower bound and an upper bound.

A confidence interval is symmetric, which means that the point estimate used is the mid point between these two bounds, that is, the mean of the two bounds.

In this problem, we have that:

Lower bound: 0.366

Upper bound: 0.506

Point estimate:

(0.366 + 0.506)/2 = 0.436

The point estimate for estimating the true proportion of employees who prefer that plan is 0.436

8 0
3 years ago
Read 2 more answers
Kareem made $273 for 13 hours of work. at the same rate, how many hours would he have to make to work to make $147?
klio [65]

Answer:

105

Step-by-step explanation:

273/13 × 5= 105

That's the correct answer

5 0
2 years ago
Mean=78
bija089 [108]

Answer:

74 and 79

6

Step-by-step explanation:

7 0
4 years ago
Find all the whole number solutions to the equation a+b+c+d=15
Allushta [10]

Answer:

a=−b−c−d+15

Step-by-step explanation:

Step 1: Add -b to both sides.

a+b+c+d+−b=15+−b

a+c+d=−b+15

Step 2: Add -c to both sides.

a+c+d+−c=−b+15+−c

a+d=−b−c+15Step 3: Add -d to both sides.

a+d+−d=−b−c+15+−d

a=−b−c−d+15

6 0
3 years ago
What is the solution?
galina1969 [7]

Answer:

y=60 x=16

Step-by-step explanation:

the triangles are identical so 92+y=3y-28 so solve that for y:

                                                     -y      +28

                                                  120=2y                                                                            .                                                  /2      /2

                                                  60 = y so y=60

and 6x+2=3x+50 and solve that for x: which gets x = 16

Then are you supposed to plug it in to the numerical equvilant to the angles and sides becuase if so:  B and E is 152, AC and DF are 98

Hope this helps and brainliest would be greatly appreciated! Thanks!

4 0
3 years ago
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