All categories

3 years ago

Probability please answer‍♀️ Helppp please

Mathematics

1 answer:

wlad13 [49]3 years ago

3 0

Step-by-step explanation:

Let X be a random variable with PDF given by

fX(x)={ cx2 |x|≤1 0 otherwise

Find the constant c.

Find EX and Var(X).

Find P(X≥

You might be interested in

Given cos(x)=1/2, what is the value of cos(x+pi)?

patriot [66]

Answer:

-1/2

Step-by-step explanation:

cos(x+pi) = -cos(x), so the answer is -1/2.

8 0

2 years ago

Please help <br><br><br> Vghjhjbjbjbjh

timofeeve [1]

Answer:

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

Which estimate is the most reasonable for this problem?

DIA [1.3K]

If you would like to know how much farther does Louisa's family need to drive, you can calculate this using the following steps:

791 miles - 114 miles = 677 miles ... 700 miles

The correct result would be D. 700 mi.

5 0

3 years ago

I have nooooo clue, please help

Aleksandr-060686 [28]

Answer:

case a) $x^{2}=3y$ ----> open up

case b) $x^{2}=-10y$ ----> open down

case c) $y^{2}=-2x$ ----> open left

case d) $y^{2}=6x$ ----> open right

Step-by-step explanation:

we know that

1) The general equation of a vertical parabola is equal to

$y=a(x-h)^{2}+k$

where

a is a coefficient

(h,k) is the vertex

If a>0 ----> the parabola open upward and the vertex is a minimum

If a<0 ----> the parabola open downward and the vertex is a maximum

2) The general equation of a horizontal parabola is equal to

$x=a(y-k)^{2}+h$

where

a is a coefficient

(h,k) is the vertex

If a>0 ----> the parabola open to the right

If a<0 ----> the parabola open to the left

Verify each case

case a) we have

$x^{2}=3y$

$y=(1/3)x^{2}$

$a=(1/3)$

$a>0$

therefore

The parabola open up

case b) we have

$x^{2}=-10y$

$y=-(1/10)x^{2}$

$a=-(1/10)$

$a$

therefore

The parabola open down

case c) we have

$y^{2}=-2x$

$x=-(1/2)y^{2}$

$a=-(1/2)$

$a$

therefore

The parabola open to the left

case d) we have

$y^{2}=6x$

$x=(1/6)y^{2}$

$a=(1/6)$

$a>0$

therefore

The parabola open to the right

3 0

3 years ago

You spend $40 on 5 Pounds of concreate what is the<br> 1 unit rate in dollars

Umnica [9.8K]

Answer:

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers