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iren2701 [21]
3 years ago
11

Hep me hep me pls mabye next week

Mathematics
2 answers:
Ne4ueva [31]3 years ago
5 0

Answer:

6/8

Step-by-step explanation:

i know that its easy

Slav-nsk [51]3 years ago
5 0

Answer:

6/8

Step-by-step explanation:

They both equal 75%

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Let X1, . . . ,Xn be an i.i.d. random sample from a N(0, 1) population. Define Y1 = 1 n n X i=1 Xi , Y2 = 1 n n X i=1 |Xi| . Cal
nalin [4]

For each 1\le i\le n, E[X_i]=0, so that

\displaystyle E[Y_1]=E\left[\frac1n\sum_{i=1}^nX_i\right]=\frac1n\sum_{i=1}^nE[X_i]=0

Meanwhile,

\displaystyle E[Y_2]=\frac1n\sum_{i=1}^nE[|X_i|]

Each of the X_i have PDF

f_{X_i}(x)=\dfrac1{\sqrt{2\pi}}e^{-x^2/2}

for x\in\Bbb R. From this we get

E[|X_i|]=\displaystyle\frac1{\sqrt{2\pi}}\int_{-\infty}^\infty|x|e^{-x^2/2}\,\mathrm dx=\sqrt{\frac2\pi}\int_0^\infty xe^{-x^2/2}\,\mathrm dx=\sqrt{\frac2\pi}

\implies E[Y_2]=n\sqrt{\dfrac2\pi}

8 0
3 years ago
Can someone help me with this
katrin [286]

Half  the length of the curve which separates the 2 halves = 1/2 circumference of a circle with diameter 6 mm.  = 1/2 * pi * d = 3pi mm

So the length of the line = 6pi =  18.85 mm to nearest hundredth. answer

The area of shaded region = 1/2 area of the circle = 1/2 pi r^2

= 1/2 * pi * 6^2

=  56.55 mm^2  to nearest hundredth  answer


8 0
3 years ago
What is the slope of the line shown on the graph? A)3 B)1/3 C)−3 D)−1/3
MatroZZZ [7]

Answer:

1/3

Step-by-step explanation:

The slope of the line is found by

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

we have two point ( 0,0) and ( 3,1)

   = ( 1-0)/( 3-0)

   = 1/3

4 0
3 years ago
E + f =48<br> e=3f<br> Plz help - thanks
Novosadov [1.4K]

Answer:

given \:  \\ \\ e = 3f \\  e + f = 48 \\  \\ 3f + f = 48 \\   4f = 48 \\ f =  \frac{48}{4}  \\ f = 12 \\ so. \\ e = 3 \times 12 = 36

<h2><em>plzz mark it as a brilliant ans</em></h2>
8 0
3 years ago
Please give an explanation!!!
lisabon 2012 [21]

Answer:

  • B) 5

Step-by-step explanation:

The area is the sum of three sections: rectangle and two same triangles

<u>Rectangle has sides of </u>

  • 10 and 9 - 4 = 5

<u>Triangles have sides of </u>

  • 4 and 10/2 = 5

The missing number is 5 for both parts of the equation

Correct option is B

8 0
3 years ago
Read 2 more answers
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