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Zigmanuir [339]
3 years ago
6

statistical analyst for the Wall Street Journal randomly selected six companies and recorded both the price per share of stock o

n January 1, 2009 and on April 30, 2009. The results are presented below. Suppose the analyst wished to see if the average price per share of stock on April 30, 2009 is greater than the average price per share of stock on January 1, 2009 at α=.025. Apr. 30, 2009 33 33 34 30 33 38 Jan. 1, 2009 21 25 30 33 23 27 For the hypothesis stated above, what is the P-value?
Mathematics
1 answer:
kakasveta [241]3 years ago
6 0

Answer:

p value= 2.228

Step-by-step explanation:

since average of two groups is being compared two-sample t-test will be performed.

degrees of freedom= 12-2=10

at α=.025 from t table

p value= 2.228

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SA=2(3.14)r(2)+2(3.14)rh<br> Solve for h
uranmaximum [27]

Answer:

I think but I might have done it the wrong way

2πr(r+h)

Step-by-step explanation:

7 0
3 years ago
The living room in the house has an area off 244 square feet and a width of 14 feet what is the length of the room
xxTIMURxx [149]

Answer:

14

Step-by-step explanation:

So if its 224 square feet and the width if 14 feet the length should be 14 also I think lol Here , imagine a square put 224 inside it for the area , then put down 14 on top and bottom because its the width , multiple 14×14=56+140=196+14=210+14=224 And the last 14's are the length which u have to add Im not sure if that made any sence lol but I hope it did .

7 0
2 years ago
Will be marked brainliest if answered correctly
alexandr402 [8]

Answer:

the second one

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
A system of equations is shown below. Which of the following statements describes the graph of this system of equations in the (
ollegr [7]

The given system of equations represent a single line with positive slope. So option C is correct.

<u>SOLUTION: </u>

Given system of equations are

\begin{array}{l}{3 y-5 x=15 \rightarrow(1)} \\\\ {6 y-10 x=30 \rightarrow(2)}\end{array}

Now, if we observe, (1) \times 2 \rightarrow(2) multiplying the 1^{st} equation with 2 results in 2^{nd} equation.

which means the two line equations represents the same line.

Now, let us find the slope of line, \text { slope }=\frac{-x \text { coefficient }}{y \text { coefficient }}=\frac{-3}{-5}=\frac{3}{5}=\text { positive slope }

So, the line has a positive slope.

5 0
3 years ago
Solve the system of equations. 4x+2y+5z=8 5x+3y+4z=9 6x+3y+3z=3
Alchen [17]

Answer:

x = -4, y = 7,  z = 2.

Step-by-step explanation:

4x + 2y + 5z = 8......(1)

5x + 3y + 4z = 9......(2)

6x + 3y + 3z = 3......(3)

Subtract:  equation (2) - equation (3):

-x + z = 6 ........(4)

Multiply   (1) by 3 and (2) by 2:

12x + 6y + 15z = 24 .........(5)

10x + 6y + 8z = 18 ...........(6)

Subtract: (5) - (6):

2x + 7z = 6..............(7)

Multiply  equation (4) by 2:

- 2x + 2z = 12.........(8)

Add (7) + (8):

9z = 18 , so  z = 2.

Substitute for z in equation (4)

-x + 2 = 6

-x =  4 so x = -4.

Now find y by substituting in equation (1):

4(-4) + 2y + 5(2) = 8

2y =  8 + 16 - 10 = 14

y = 7.

3 0
3 years ago
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