The following function is probability Distribution function.
F(x)=6x+1/25, x=0, 1, 2, 3, 4.
Determine the mean, μ, and variance, σ2, of the random variable. Round your answers to two decimal places.

Answers

Answer 1

Answer:

9.60 ; - 60.96

Step-by-step explanation:

Given the function :

F(x)=6(x+1) /25, x=0, 1, 2, 3, 4.

x = 0

F(0)=6(0+1)/25 = 6/25 = 0.24

x = 1

F(1)=6(1+1)/25 = 12/25 = 0.48

x = 2

F(2)=6(2+1)/25 = 18/25 = 0.72

x = 3

F(2)=6(3+1)/25 = 24/25 = 0.96

x = 4

F(2)=6(4+1)/25 = 30/25 = 1.2

X ______0 _____ 1 ______ 2 ______ 3 ____ 4

P(x) ___ 0.24 __ 0.48 ___ 0.72 ____ 0.96 __ 1.2

Mean, μ = Σx*p(x) :

(0*0.24) + (1*0.48) + (2*0.72) + (3*0.96) + (4*1.2)

= 9.60

Variance : Σx²*p(x) - μ²

(0^2*0.24) + (1^2*0.48) + (2^2*0.72) + (3^2*0.96) + (4^2*1.2) - 9.6^2

= 31.2 - 92.16

= - 60.96


Related Questions

Which graph represents this exponential function? f(x)=3(2)^x-4

Answers

Answer:

here goes the graphs but we still need the answer

Step-by-step explanation:

We have given that the function,

f(x)=3(2)^x-4

Now we have to find the graph of the given function.

The graph of the given function is determined by

What is the exponential function?

The exponential functions model a relationship in which a constant change in the independent variable gives the same proportional change

here we use the graphical method

Put x=0 then y=-1

y=0 then the value of x=0.4.

We draw this function by using the graphing calculator then we get the graph of function is shown in fig.

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Figue out the measures

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Answer:

Angle 1 is 134 and Angle 2 is 46

Mark wants to buy a new pair of shoes that cost $95. He has $20 and plans to save $5 each week. How many weeks will it take him to save the money?

Answers

Answer:

it would take him 15 weeks

Step-by-step explanation:

cost of shoes= 95

he has 20        so 95-20= 75

he needs 75 more dollars so 75 divided by 5= 15 weeks

What are the answers?

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Answer:

Step-by-step explanation:

4(8x+16) = 32x + 64 = perimeter

(Sorry don't know what it means by factor)

Challenge The price of Stock A at 9 AM was $15.55. Since then, the price has been increasing at the rate of $0.06 each hour. At noon the price of Stock B was $13.30. It begins to decrease at the rate of $0.14 each hour. If the two rates continue, in how many hours will the prices of the two stocks be the same?

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Answer:

Try reading it pver. This is because they are too cashy. Like Duh

Step-by-step explanation:

write an expression for the operation described below subtract v from 2

Answers

Answer:

2 - v

Easy method: plug in v with some other number and see how it rolls out

Answer:

Hi how are you doing today Jasmine

On a math test a student, Jake, has to identify all the coefficients and constants of
the expression 8y +n + 9. Jake says that 8 is a coefficient and 9 is a constant. Identify all the
coefficients and constants of the expression. What error might Jake have made?

Answers

He is correct, but 1 is also a coefficient. n equals 1n, so there is a hidden 1 in the equation

I had $13.00. My Mom gave $10.00. My Dad gave $30.00. My Aunt, My Uncle and grandma gave me $100.00. I had another $7.00. How much did I have? ​

Answers

Answer:

Step-by-step explanation:

u had $13. ur mom gave u $10. ur dad gave u $30. ur aunt, uncle, and grandma gives u $100. u had another $7. u have a total of $160.

100 + 30 = 130 + 10 = 140 + 13 = 153 + 7 = $160

Answer:

$360

Step-by-step explanation:

Start off with 13, add 10 makes it 23

23 + 30 = 53

Aunt, Uncle, and grandma each give you 100

100 x 3 = 300

300 + 53 = 353 + 7 = $360

In conclusion, your family spoils you

Find the value of X. Round to the nearest 10th

Answers

Answer:

Step-by-step explanation:

You have to use the tangent.

Tan(y) = opposite / adjacent

tan(10) = x / 500

tan(10) = 0.1763

0.1763 = x / 500

500 * 0.1763 = x

x = 88.1635

x = 88.2

Vernon is having a fish fry. Catfish is on sale for 6.10 per pound. Vernon buys 2 3 5 pounds of catfish. How do you write 2 3 5 as an improper fraction?

Answers

Answer:

76.8

Step-by-step explanation:

what is the prime factorization for 900​

Answers

Answer:

prime factors of 900 are 2,2,3,3,5,5

which is the same as 2^2×3^2×5^2

Factor the following problem: 81x^4 - 49x^4 =​

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Answer:

a2 - b2 = (a - b)  where a =9x and b = 7

(9x + 7) (9x - 7 )

Step-by-step explanation:

1. Which figure would you have used to make the Escher‐like tessellation shown below?

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Answer:

I'm pretty sure the answer is B.

Step-by-step explanation:

Hope this helps u out!

If yall could help that would be poggers

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The answer is rotation on earth look closely at the picture and exam it

the angles between two hands of a clock 5 o clock is​

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Answer:

150 degrees

Step-by-step explanation:

each 10 minutes equals 30 degrees in a clock

round $74.91 to the nearest dollar​

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Answer:$75

Step-by-step explanation:

Brhe

Order the following numbers from least to greatest.
122 meters ABOVE sea level
1,629 meter ABOVE sea level
15.24 meters BELOW sea level
98 meters BELOW sea level

Answers

Answer: 98 meter below

15.24 meters below

122 meters above

1629 meters above

Step-by-step explanation:

Landon and Colin bought a 1/2
pound of peanuts. They are sharing the nuts equally. How many pounds of peanuts will each person get?​

Answers

Answer:

1/4 of a pound

Answer: one fourth of a pound

Step-by-step explanation:

so first you have to use a calulator last type = then u guet your answer 1/4 of a pound

Do as many as you want.
Thanks.

Answers

Answer:

1. 11

2. 7.46

3. d = 28

4. I'm afraid I don't know how to solve this kind of problem.

5. -5

Step-by-step explanation:

1. 2 - (-3) + 6 = 5 + 6 = 11

2. 7.46 (5 and up round up)

3. d = 21 + 7

   d = 28

5. -55 / 11 = -5

Hope that helps!

1. x - y + 6 = 2 - (-3) + 6 = 5 + 6 = 11

2. 7.46

3. d - 21 = 7

   d = 28

4. 4/1

5. -5

help please, help me

Answers

Answer:

7.07 in^2 is what i got

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Answers

it’s is 0.............

An individual who has automobile insurance from a certain company is randomly selected. Let X be the number of moving violations for which the individual was cited during the last 3 years. The probability mass function of X is given below as; Number of moving violations (X) 0 1 2 3 4 P(X) 0.17 0.23 0.27 0.24 0.09 What is the cumulative distribution function

Answers

Answer:

(X)      0        1          2          3         4

P(X)   0.17   0.23    0.27    0.24    0.09

F(x)    0.17    0.04    0.65    0.91      1      

Step-by-step explanation:  

Given that;

(X)      0        1          2          3         4

P(X)   0.17   0.23    0.27    0.24    0.09

cumulative distribution function can be calculated by;  be cumulatively up the value of p(x) with the values before it;

so

x      F(x)

0     P(X = 0) = 0.17

1       P(X = 0) + P(X = 1) = 0.17 + 0.23 = 0.4

2      P(X = 0) + P(X = 1) + P(X = 2) = 0.17 + 0.23 + 0.27 = 0.65

3      P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3) = 0.17 + 0.23 + 0.27 + 0.24 = 0.91

4      P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3) + P(X = 4) = 0.17 + 0.23 + 0.27 + 0.24 + 0.09 = 1

Therefore, cumulative distribution function f(x) is;

(X)      0        1          2          3         4

P(X)   0.17   0.23    0.27    0.24    0.09

F(x)    0.17    0.04    0.65    0.91      1      

Simplify the expression.
(-0.75x + 6 ) + (5.5x + 7.4)

Answers

answer: 4.75x + 13.4

Help please I really need help with this math problem it’s really difficult for me

Answers

F,B
A,D
F,E
B,E
45°
good luck buddy

Step-by-step explanation:

Q5

Supplementary angles add up to 180°∠EGF and ∠FGB

Q6

Vertical angles formed by two intersecting lines and are opposite to each other∠EGF and ∠BGC

Q7

Adjacent angles share a common side∠AGB and ∠BGC

Q8

Complementary angles form a 90° angle∠BGC and ∠CGD

Q9

Measure of ∠CGD

∠CGD is complementary with ∠BGC and

∠BGC is vertical with ∠EGF, which is 35°

m∠CGD = 90° - 35° = 55°

Quinn works at the Sugar Cup Café. This morning, she made the day's first batch of hazelnut coffee by mixing together 6 ounces of hazelnut syrup and 75 ounces of unflavored coffee. When it ran out in the afternoon, she made a second batch by mixing together 2 ounces of hazelnut syrup and 25 ounces of unflavored coffee. Which batch of coffee had a stronger hazelnut flavor?

Answers

Answer:

neither

Step-by-step explanation:

If m,1 = 100 find m,5

Answers

isn’t the same ?? so wouldn’t it be 100 also ?

Phil and Matt made a total of $72.00 selling the cookies. How many cookies
did Phil make and how many cookies did Matt make?

Answers

Answer:

36

Step-by-step explanation:

It would only be 36 if they split the amount though

Based on a linear equation, we will see that they sold a total of 288 cookies.

What is an equation?

An equation is an expression that shows the relationship between two or more numbers and variables.

A mathematical equation is a statement with two equal sides and an equal sign in between. An equation is, for instance, 4 + 6 = 10. Both 4 + 6 and 10 can be seen on the left and right sides of the equal sign, respectively.

We have been given that Phil and Matt sell cookies for $0.25 each,

Thus, if they sell x cookies, the total revenue is:

R(x) = $0.25x

Now, we know that they made a total of $72.00,

Therefore, we need to solve the linear equation:

$0.25x = $72.00x

= $72.00/$0.25 = 288

Hence, they sold 288 cookies.

Learn more about linear equations:

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PLZ HELP I NEED IT ITS DUE AT 12:00

Answers

Let X equal two point shots
Let Y equal three point shots

The equations are

X + Y = 21

2X = Y

A recipe calls for 12 cup of milk for every 34 cup of flour.

If Kenny wants to double the recipe, how many cups of flour will he need?

Answers

Answer:

68

Step-by-step explanation:

because she wants to double the recipe

so she will need 6 cups of milk

The polynomial x^2 + 9 is a factor of x^5 + x^4 - 18x - 18. Please select the best answer from the choices provided T or F

Answers

Answer:

F

Step-by-step explanation:

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