The number of miles that a particular car can run before itsbattery wears out is exponentially distributed with an averageof 10,000 miles.Problems1. The mean of a probability distribution, , is given by . Find given that theaverage of this exponential distribution is 10,000.

Answers

Answer 1

Answer:

[tex]\lambda=10000[/tex] miles

Step-by-step explanation:

We are given that

[tex]\beta=10000 miles[/tex]

Exponential distribution function

[tex]f(x)=\frac{1}{\beta}e^{-\frac{x}{\beta}}, x\geq 0[/tex]

             0, otherwise

Using the formula

[tex]f(x)=\frac{1}{10000}e^{-\frac{x}{10000}},x\geq0[/tex]

              0, otherwise

[tex]E(x)=\int_{-\infty}^{\infty}xf(x) dx[/tex]

Using the formula

[tex]\lambda=E(x)=\frac{1}{10000}\int_{0}^{\infty}xe^{-\frac{x}{10000}}dx[/tex]

[tex]\lambda=\frac{1}{10000}([-10000xe^{-\frac{x}{10000}}]^{\infty}_{0}+10000[-10000e^{-\frac{x}{10000}}]^{\infty}_{0})[/tex]

Using formula

[tex]\int u\cdot vdx=u\int vdx-\int (\frac{du}{dx}\int vdx)dx[/tex]

[tex]\lambda=\frac{1}{10000}(0-(10000)^2(0-1))=10000[/tex]

Hence, the value of [tex]\lambda=10000[/tex] miles


Related Questions

I need help with this

Answers

Answer:

x = 24.52

Step-by-step explanation:

Since this is a right triangle, use Pythagorean Theorem to solve for the hypotenuse.

Pythagorean Theorem: a² + b² = c²

24² + 5² = x²

576 + 25 = x²

601 = x²

√601 = x

If a number reads the same forwards or backwards, like 404 and 1221, then it's called a palindrome. The first palindrome greater than 9999 is 10 001. What is the fifth palindrome greater than 9999?

Answers

Answer:

The fifth Palindrome greater than 9999 is 10,401

Step-by-step explanation:

Here, we want to get the fifth palindrome greater than 9999

To get this, we are going to write out the palindromes that are greater than 9999

we have them as follows to the fifth

10,001

10,101

10,201

10,301

10,401

So the fifth Palindrome greater than 9999 is 10,401

The fairs train ride covers a distance of 3 miles in 20 minutes what is the speed for the ride in miles per hour?

Answers

Answer:

20/60=1/3

R= d/t

R=3/ [tex]1/3[/tex]

R=9

Step-by-step explanation:

If point A is located at -8 on a number line and point B is located at 3 what is the distance between the two points?​

Answers

Answer:

5

Step-by-step explanation:

you just have to subtract 3 by 8 and then you get 5

Answer:

11

Step-by-step explanation:

You are finding the space between them so we are going to make them absolute values and then add them:

|-8| + |3| = 8+3 = 11

Write an equation of the locus of all points equidistant from the x axis and the y axis and whose coordinates have the opposite signs.

Answers

Answer:

y=-x

Step-by-step explanation:

Since the y-axis and x-axis are intersecting lines then you need to apply the locus of intersecting lines which would be the angle bisector and since the problem is asking for the opposite signs you need to make it -x instead of x.

Hope this helps

:)

5(m + 4) = -2(-4 - m) + 3

Answers

Answer:

m=-3

Step-by-step explanation:

Answer:

m= -3

Step-by-step explanation:

Hey can anyone help me with this question

Answers

Answer:

there's no question there's only lines

Step-by-step explanation:

if you comment the question then I can help

A 552 ​-inch is cut into two pieces. One piece is three times the length of the other. Find the length of the shorter piece.

Answers

Answer: 138 inches

Step-by-step explanation:

138*3=414inches=Length of larger piece

414/3=138 inches=Length of smaller piece

414+138=552 inches

What property is shown in the example below?

(x3 + 2 x) + x = x3 + (2x + x)

A. Identity
B. Distributive
C. Commutative
D. Associative

Answers

Answer:

Associative

Step-by-step explanation:

D is the correct answer.

Suppose you have a population in which 60% of the people approve of gambling. Is the value 0.60 a parameter or a statistic

Answers

Answer:0.60 is a parameter .

Step-by-step explanation:

In statistics, a parameter is a number that summarize the data for a whole population.

On the other hand , statistic gives a measure for sample of population.

Given: We have a population in which 60% of the people approve of gambling.

60% = 0.60

Since it is a measure for the population , it is denoted as population parameter.

Hence, 0.60 is a parameter not statistic.

Helpppppp meeee please and thank you

Answers

the answer is dddddddddddd

What is the solution of the following systems of equations? y = 1/2x
y = -x -3

Answers

Answer:

x = -2,  y = -1

Step-by-step explanation:

System of Equations

Solve the system:

y = 1/2x

y = -x - 3

Multiplying the first equation by 2:

2y = x

Substituting x in the second equation:

y = -2y - 3

Adding 2y:

3y = -3

y = -3/3

y = -1

And x = 2*(-1) = -2

Solution: x = -2,  y = -1

1.
4.ft.
6 ft
5 ft
4 ft

Answers

Answer: And the 4 ft 5 ft 6 ft 4 ft

Step-by-step explanation:

Answer:

Your answer will be 4ft.  Please give brainlest

Step-by-step explanation:

In the figure below, k || o. Find the values of y and z.

Answers

Answer:

y = 112

z = 27

Step-by-step explanation:

Alright,

So we know that a straight line adds up to 180. And looking at the figure, it looks like 68 + y = 180 if you do some visualization.

So, we can already calculate y.

y = 180 - 68

y = 112

Now we find z. z here is represented in an expression. We can see that y and the expression z is in are congruent to each other which means they will equal each other. And since we know that y = 112, we know that the expression z is in is also equal to 112.

So we set up an equation like so:

112 = 3z + 31

And start to simplify:

81 = 3z

Finally we divide:

27 = z

Therefore, z is 27

WILL MARK BRAINLIEST

Which graph represents the solution set of -2y > 7x + 4?

Answers

we have

----> inequality A

The solution of the inequality A is the interval ------> [-1,∞)

-------> inequality B

The solution of the inequality B is the interval ------> (-∞,7]

The solution of the compound inequality is

[-1,∞) ∩ (-∞,7]=[-1,7]

therefore

the answer in the attached figure

divide by -2 (flip the sign!!) on each side to get y<-7/2x-2 graph the "intercepts" (0,-2) and (-4/7,0) with a dotted line.

pick a test point (0,0) and plug into the equation to determine which side to shade 0<-7/2(0)-2
0<-2 is false so shade below the line

Which of the following is the reciprocal of 5? A.0.5 B.5 C.1/5 D.50

Answers

Answer:

Step-by-step explanation:

Option C 1/5 is the correct answer

which is the real world situation that can be described by a linear inequality

Answers

Answer:

Pretty sure it's B

Step-by-step explanation:

Everything else would be more like an equation. I think B is the only inequality.

A woman purchased a used car for $3,000. She decided to sell the car for 20% above her purchase price. She could not sell the car so she reduced asking price by 20%. If she sells the car at the reduced price, she will have a profit or a loss or will she break even?

10.1 #17

Answers

Answer:

She will have a loss of $ 120

Step-by-step explanation:

Purchase price of car = $ 3000

20% of 3000 = [tex]\frac{20}{100}*3000[/tex]

                     = 20 * 30

                    = $ 600

Selling price = 3000 + 600 = $ 3600

Reduction price = 20%  of 3600

                          [tex]\frac{20}{100}*3600[/tex]

                       = 20  * 36

                       = $ 720

Current selling price after reduction = 3600 - 720

                                                            = $ 2880

Loss = 3000 - 2880

        = $ 120

She will break even
3000x20%=600. Which is above her purchase price total 3600 and she couldn’t sell.
She reduced the asking price(3600) by 20%
Which would -600. Now she’s asking 3000 what she paid.
Hope this helps

i need help plss dont lie

Answers

Answer:

A x B = 5/6 x 3/4 = 15/24

Answer = 15/24

Step-by-step explanation:

Answer:

We are asked to find the area of the rectangle that has side lengths of 3/4 yard and 5/6 yard.

We know that area of rectangle is width times length.

To find the area of the given rectangle we will multiply both side length as:

Area of regatangle = width x Lenghth

Area of regtangle = 3/4 x 5/6 yard to the 2 power

Area of regtangle = 1/4 x 5/2 yard to the 2 power

Area of regtangle = 1 x 5/ 4x2 yard to the 2 power

Area of regtangle = 5/8 yard to the 2 power

Therefore, the area of the given rectangle would be 5/8 square yards.

Which is the graph of g(x) = 2^x-1 + 3?

Answers

Answer:

gave no examples.. this is what I got

Step-by-step explanation:

complete the ratio table​

Answers

15:15

36:60

54:90

Hope it helps~

As pointed out, you lose if the pile has 1, 6, 11 or 16 sticks. How many sticks are needed in the next two piles for you to lose

Answers

Answer:

21 and 26 totaling 47sticks

Step-by-step explanation:

Th number of sticks form an arithmetic progression

1, 6, 11, 16...

The nth term of an arithmetic progression is expressed as;

Tn = a+(n-1)d

a is the first term = 1

d is the common difference

d = 6-1 = 11-6 = 5

n is the number of terms

The next two terms are the fifth and sixth term

T5 = 1+(5-1)5

T5 = 1+4(5)

T5 = 1+20

T5 = 21

T6 = 1+(6-1)5

T6 = 1+5(5)

T6 = 1+25

T6 = 26

Hence the number of sticks needed in the next two piles are 21 and 26 totaling 47sticks

Use the Distributive Property to expand 2 (-3x + 5).​

Answers

Answer:

-6x+10

Step-by-step explanation:

The distributive property states that multiplying each term will yield the same product as multiplying the sum. This means to expand this expression multiply both addends by 2 then add together. So, the new expression is, 2 * -3x + 2 * 5, which simplifies to -6x+10.

Answer:

Step-by-step explanation:

-6x+10

What is the area of the regular hexagon ABCEF? Explain your reasoning.

Answers

Answer:

1350[tex]\sqrt{3}[/tex] units²

Step-by-step explanation:

The regular hexagon consists of 6 equiangular triangles

The area (A) of a equilateral triangle is calculated as

A = [tex]\frac{s^2\sqrt{3} }{4}[/tex] ( s is the side length )

Here s = 30 , then

A = [tex]\frac{30^2\sqrt{3} }{4}[/tex] = [tex]\frac{900\sqrt{3} }{4}[/tex] = 225[tex]\sqrt{3}[/tex] units²

Thus the area of the regular hexagon is

area = 6 × 225[tex]\sqrt{3}[/tex]

        = 1350[tex]\sqrt{3}[/tex] units² ← exact value

         ≈ 2338.3 units² ( to 1 dec. place )

Nathaniel's car used 10 gallons to travel 360 miles. How far can he travel on 16 gallons?

Answers

Answer:

16 gallons will get you 576 miles

Step-by-step explanation:

We use ratios to solve this question

10 gallons : 360 miles

Divide both sides by 10 to find 1 gallon

1 gallon:36 miles

multiply both sides by 16

16 gallons : 576 miles

Answer:

576 miles

Step-by-step explanation:

If Nathaniel's car uses 10 gallons to travel 360 miles, then the car can drive 36 miles per 1 gallon (360/10=36).

If he has 16 gallons and he can drive 36 miles per gallon, he can travel 576 miles (36*16=576).

What is happening to the pieces (units) when the numerator and denominator are getting larger?
I NEED HELP!!!!!!

Answers

Answer:

the number itself, (units) are getting bigger

Step-by-step explanation:

pls answer all questions
x - 3 = 11
2x = 10
x4=10
x + 6 = 15
3x = 15
7 = x - 6
x - 5 = -7
x6 = -12
x - 7 = -17
-4 + x = 9
-7 + x = -10
-x = 11
7x = 0
12x = 7
x3= -5

Answers

1. x=14
2. x=5
3. x=2.5
4.x=9
5.x=5
6.x=13
7.x=-2
8.x=-2
9.x=-10
10.x=13
11.x=-3
12.x=-11
13.x=0
14.x=0.58
15.x=-1.6

hope this helps :)
15
46
57
13
16
19
71
I hope I can help lol

Emily paid $3.84 in sales tax on an item that cost $64.00 before tax. At that rate, how much would be paid in sales tax for an item that cost $82.00?

Answers

Answer:

8% tax rate & $ 4.40

Step-by-step explanation:

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Evaluate: 8 * 6+ (12.- 4) = 2

Answers

Answer:

This is a false equation

Step-by-step explanation:

Translate and solve: 72 greater than r is less than -432,

Answers

Answer:

r < -504

Step-by-step explanation:

The problem says;

72 + r < -432

Inverse operations;

72 + r < -432

-72       -72

r < - 504

Translate and solve 72 greater that or less that -432
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