Suppose () = 1/8 for 0 ≤ ≤ 4 for x being a continuous random variable Is () a probability density function? Prove or disprove.

Answers

Answer 1

Answer:

The expected value of x ; E(x) = 1

Step-by-step explanation:

F(x) = 1/8 for 0 ≤ x ≤ 4

To prove that it is a probability density function we will find E(x )

attached below is the required prove

It is proven that F(x) = 1/8 for 0 ≤ x ≤ 4 is  probability density function

The expected value of X = 1

Suppose () = 1/8 For 0 4 For X Being A Continuous Random Variable Is () A Probability Density Function?

Related Questions

please help with this ?!?

Answers

Radius = 1/2 Diameter
Diameter = 12
Radius = 6

Area of circle = (pi) r ^2
=pi 6^2
=36pi

Area = 113.1 cm^2

Thank you :)




The question is above!



;)​

Answers

Answer:

umm 9/2

Step-by-step explanation:

Use the substitution method to solve the system of equations.
5x + 2y = 1
y = -x + 2

Answers

Answer:

(x,y) = (-1,3)

Step-by-step explanation:

hope this helps!

A car drove 5 miles in 30 minutes. How far will the car go in 1 hour? ​

Answers

Answer: 10 miles

Step-by-step explanation:

Practically, just look at it.  30 minutes = 5 miles, 60 minutes = 10 miles

Mathmatically, find the constant of proportionality.

30 minutes divided by 5 miles = 6 minutes per 1 mile. 60 minutes = 10 miles

PLS HELP I'LL GIVE YOU BRAINLIEST In a recipe you need 200 g of flour to make 8 cookies. Rosie has 480 g of flour. What is the greatest number of cookies rosie can make?

Answers

Answer:

19 cookies

Step-by-step explanation:

200/8 = 25

25 grams of flour in each cookie.

480/25 = 19.2

Rosie can make up to 19 cookies with 480g of flour

Answer:

The greatest number of cookies Rosie can make is 19 cookies.

Step-by-step explanation:

200g = 8 cookies

400g = 16 cookies

475g = 19 cookies

you only have 480 g of flour and 1 cookie uses 25 g of flour.

Your Welcome!

Can you help me solve this?

Y-intercept= 4, goes through the point (2, 3)

Please solve using y=Mx+b

Answers

Answer:

y=-1/2x+4 Is your answer

Step-by-step explanation:

y=mx+b

3=2x+4

-1=2x

x=-1/2

You already know y is 4 so y=-1/2x+4

What is the diameter of a satellite dish with a circumference of 957.7?

Answers

Answer:

The diameter would be 305 m

Step-by-step explanation:

Answer:

305 assuming your using 3.14 for pi

Step-by-step explanation:

how many different four-digit ID tags can be made if repeats are allowed​

Answers

Answer:

4!

Explanation:

4! = 4×3×2×1 = 24

here's an example:

123412431324134214231432213421432314234124132431312431423214324134123421412341324213423143124321

The solids are similar. Find the missing dimension(s).
Will mark brainlest if you give a full explanation 10 min!!!

Answers

Answer:

s = 4.5 cm

l= 3.75 cm

Step-by-step explanation:

Mathematically, when two shapes are similar, the ratio of their corresponding sides are equal

According to this rule, we have it that;

4/6 = 3/s

4 * s = 3 * 6

4s = 18

s = 18/4

s = 4.5 cm

Similarly;

4/5 = 3/l

4 * l = 5 * 3

4l = 15

l = 15/4

l = 3.75 cm

Name the coordinates of P if P(0, 4) is rotated 180°

Answers

Answer:

P'(0, -4)

Step-by-step explanation:

when a coordinate (x, y) is rotated by 180 degrees, the resulting coordinate will be (-x, -y). Note that each coordinate is negated when rotated about 180 degrees

Given the coordinate P (0, 4). When rotated by 180 degrees, the resulting coordinate will be at P'(0, -4)

PLEASE HELP ASAP!!!!!!!!!!!!!!!

Answers

Answer:

the answer is D

Step-by-step explanation:

y=[tex]x^{2}[/tex]+1

Find the area of the circle. Round your answer to the nearest hundredth. diameter 3in

Answers

Area of circle = pi × r squared

A= 3.14....× (1.5×1.5)

A= 7.068583471

A= 7.07in( to nearest hundredth)

What is the solution to the system of equations?
-6x-2y = 8
1
X+ 3y = 29
O (10,-2)
O (10, 2)
O (2, 10)
O (-2, 10)

Answers

Step-by-step explanation:

-2,10 is the answer according to my working

Which of the following graphs best represents a function that has a minimum value and x-intercepts of 3 and -1?

Answers

Answer:

a

Step-by-step explanation:

I need help with this , 7x-3y+4x-5y+8x-6y​

Answers

Answer:

19x−14y

Steps:

7x-3y+4x-5y+8x-6y

=19x-3y-5y-6y

= 19x−14y

plz mark as brainliest

Answer:

19x-14y

Step-by-step explanation:

rearrange

7x+4x+8x-3y-5y-6y

solve the coefficient and add the variables

Find the volume of the cone.
please help me.​

Answers

Answer:

46.08

Step-by-step explanation:

the formula for finding the volume of the cone is: V = π r^2 h/3

Insert the information provided (2 because half the diameter is the radius)

and solve. Hope this helps!

Which statements are correct? Check all that apply. 5 students study both French and Spanish. 63 students study French. 2 students study neither French nor Spanish. 30 students study French, but not Spanish. 63 students study Spanish.

Answers

Answer:

The correct answers are:

• Option 1,

• Option 3 and

• Option 4

Step-by-step explanation:

From the two-way table, it is true that;

1.) 5 students study both French and Spanish.

2.) 30 students study French but not Spanish.

3.) 2 students study neither French nor Spanish

4.) 35 students study French

5.) 68 students study Spanish

6.) 63 students study Spanish but not French

This makes the correct answers options 1, 3 and 4

P.S: I believe your question is from the attached image

Answer:

A. 5 students study both French and Spanish.

C. 2 students study neither French nor Spanish.

D. 30 students study French, but not Spanish.

:)

Only one correct answer

Answers

Answer:

19

Step-by-step explanation:

ngl its kinda easy 5(2)+3(3) = 10+9 = 19

Answer:19

Step-by-step explanation:5x2=10+3x3=9 so 10+9=19

Simplify 2xy(4x+7-3y

Answers

Is it not just going to be distributed out into 8x^2+14xy-6xy^2

b. If each square has a side length of 61 cm, write an expression for the surface area and another for the volume of the figure

Answers

Answer:

6*(61^2) and 61^3

Step-by-step explanation:

If the squares have a side length of 61 (assuming this is a cube) our surface area is 6*(61^2) because each side is a square and there are six sides.

As for the volume, we have 61^3.

Hope this was helpful.

~cloud

What is the volume of a box with 385 cubes and 11/3 x 5/3 x 7/3

Answers

Answer:

y

=

x

2

2

x

,  

y

=

x

Step-by-step explanation:

Help
I dont know the answer im not very smart

Answers

the domain of G is 4 and the range of G is 9 (domain=x, range=y :))

median for 15,17,15,16,14,18,5

Answers

Answer:

the median is 15

Explanation:

you can find the median by arranging the numbers from smallest to largest and finding the number in the middle.

5 14 15 15 16 17 18

in this case, the number in the middle is 15 so the median for this data set is 15.

i hope this helps! :D

Arthur has a balance of $2330 on his credit card, which he plans to pay off by

making a payment of the same amount each month. Which of these monthly

amounts will allow Arthur to pay off his balance the fastest?

Answers

Answer:

C. $80

Step-by-step explanation:

A. $70

B. $65

C. $80

D. $75

When he pays $70 monthly

Number of months = $2330 / $70

= 33.3 months

When he pays $65 monthly

Number of months = $2330 / $65

= 35.9 months

When he pays $80 monthly

Number of months = $2330 / $80

= 29.1 months

When he pays $75 monthly

Number of months = $2330 / $75

= 31.1 months

The monthly amounts that will allow Arthur to pay off his balance the fastest is $80 per month

please explain clearly

Answers

The solution to the question

Please help me I really need it this is hard for me

Answers

Answer:

27.6 cm

Step-by-step explanation:

Answer: 44.6

Step-by-step explanation:

It’s not that hard use the formula of the volume of a sphere. And just replace the R with whatever your radius is, if you have a diameter just divide it by 2 to get the radius. Hope this helps

help me its mathhhhh

Answers

Answer:

x=9 im pretty sure

Step-by-step explanation:

what is 21x+1 in simple form

Answers

Answer:

( 21 x X ) + 1

Step-by-step explanation:

How many solutions would there be for the following system of equations? y = 3x - 5 67 – 2g = 10 A 1 Solution B 2 Solutions c) No solution D Infinitely Many solutions​

Answers

Answer:

D

Step-by-step explanation:

Given the 2 equations

y = 3x - 5 → (1)

6x - 2y = 10 → (2)

Substitute y = 3x - 5 into (2)

6x - 2(3x - 5) = 10

6x - 6x + 10 = 10 ( subtract 10 from both sides )

6x - 6x = 0 , that is

0 = 0 ← True

This indicates the system has infinitely many solutions → D


Which is the minimum or maximum value if the given function
А.
The function has a maximum value of -4.
B.
The function has a minimum value of -4.
C. The function has a maximum value of -3.
D
The function has a minimum value of -3

Answers

...............................no question
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