answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Eddi Din
12 days ago
14

The random variable X measures the concentration of ethanol in a chemical solution, and the random variable Y measures the acidi

ty of the solution. They have a joint probability density function f (x, y) = A (20 - x - 2y), 0 lessthanorequalto x lessthanorequalto 5, 0 lessthanorequalto y lessthanorequalto 5 and f (x, y) = 0 elsewhere. (a) What is the value of A? (b) What is P (1 lessthanorequalto X lessthanorequalto 2, 2 lessthanorequalto Y lessthanorequalto 3)? (c) Construct the marginal probability density functions for X and Y. (d) Are the ethanol concentration and the acidity independent? (e) What are the expectation and the variance of the ethanol concentration? (f) What the expectation and the variance of the acidity? (g) If the ethanol concentration is 3, what is the conditional probability density function of the acidity? (h) What is the covariance between the ethanol concentration and the acidity? (i) What is the correlation between the ethanol concentration and the acidity?
Mathematics
You might be interested in
A gazebo is being built near a nature trail. An equation of the line representing the nature trail is y = 13x−4. Each unit in th
PIT_PIT [12445]

Respuesta:

126 pies

Explicación paso a paso:

Dado que:

Ecuación de la línea que representa el sendero de naturaleza:

y = 13x - 4

Distancia del gazebo respecto al sendero de naturaleza:

Cada unidad en el plano de coordenadas = 10 pies

Por lo tanto,

y = 13(10) - 4

y = 130 - 4

y = 126 pies

6 0
2 months ago
What kind of function is being illustrated by f(x)=|2x³-3x|+5?
AnnZ [12381]

Answer:

The option is D: Absolute value function

Step-by-step explanation:

The absolute value indicates how far a number is from 0 on the number line, in either direction.

We have the function;

f(x) = |2x³ - 3x| + 5

This function holds an absolute value operator which is |2x³ - 3x|.

Consequently, this function is characterized as an absolute value function since it includes algebraic terms enclosed in absolute value notation.

5 0
1 month ago
Find the 45th term of the arithmetic sequence: −9, −2, 5, 12, ...
Leona [12618]
You can determine your result by adding +7 to every value.
3 0
1 month ago
Read 2 more answers
Uniforms are sold in packages of 8. The stores 127 employees will each be given 3 uniforms. How many packages will the store nee
Svet_ta [12734]
First, you would divide 127 by 8 and then multiply the result by three uniforms for each employee.
8 0
2 months ago
Consider the function represented by the equation y-6x-9=0. Which answer shows the equation written in function notation with x
AnnZ [12381]

we possess

y-6x-9=0

Step 1

Eliminate the variable y

y-6x-9=0

Add (6x+9) to each side

y-6x-9+(6x+9)=0+(6x+9)

y=(6x+9)

Step 2

Change to function notation

Define

f(x)=y

f(x)=(6x+9)

thus

the result is

f(x)=(6x+9)


6 0
3 months ago
Read 2 more answers
Other questions:
  • The sum of two polynomials is 8d5 – 3c3d2 + 5c2d3 – 4cd4 + 9. If one addend is 2d5 – c3d2 + 8cd4 + 1, what is the other addend?
    7·2 answers
  • 7. During a person's commute to school, she spends 10 minutes driving 30 miles per hour (mph) and 5 minutes stopped at red light
    8·1 answer
  • Decide whether the set A of positive integers divisible by 17 and B the set of positive integers
    13·1 answer
  • Part A: Solve the equation 5(x + 2) = 6x + 3x − 14, and show your work. (5 points)
    11·2 answers
  • Julio cubes a number then takes the cube root of the result. He ends up with 20. What number did Julio start with
    11·1 answer
  • Bridget ungrouped 5,000 as shown use your understanding of place value to explain how the ungrouped number is equal to 5000
    15·1 answer
  • Question: Sara started her homework at 5:30 p.M. And finished it at 9:15 p.M. How much time did she take to finish her homework?
    9·1 answer
  • The production department has installed a new spray machine to paint automobile doors. As is common with most spray guns, unsigh
    15·1 answer
  • On a coordinate plane, a red curved line with an upward arc, labeled g of x, crosses the x-axis at (negative 2, 0), and the y-ax
    15·2 answers
  • What do you call a palace window math worksheet answer key
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!