1answer.
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
vovikov84 [41]
2 years ago
14

If p(a | b) = 0.4, p(b) = 0.8, and p(a) = 0.5, are the events a and b independent?

Mathematics
1 answer:
pashok25 [27]2 years ago
7 0

The events A and B are not independent.

Given that,

                  P(A|B) = 0.4

                  P(A) = 0.5

                  P(B) = 0.8

Two events A and B are said to be independent, if P(A∩B) = P(A) P(B)

We have, P(A|B) = P(A∩B)/P(B)

Therefore, P(A∩B) = P(A|B) P(B) = 0.4 x 0.8 = 0.32

Now P(A) P(B) = 0.5 x 0.8 = 0.4

So P(A∩B) ≠ P(A)P(B)

Therefore, the events A and B are not independent.

Learn more about independent events at brainly.com/question/22881926

#SPJ4

You might be interested in
How to multiply 4 x 800 - VALIDS
Verdich [7]

Answer:

4x800=  3,200

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
A pair of vertical angles have the measure of 2y + 5 degrees + 4y degrees what is the value of y​
timama [110]

Answer:

The value of y s 2.5

Step-by-step explanation:

Vertical angles are always equal to one another. In this case, we can find the angles by setting the two values equal and solving algebraically.

2y + 5 = 4y

5 = 2y

2.5 = y

7 0
3 years ago
What is the slope of a line that is perpendicular to the line whose equation is 7x−3y=10?
Sonja [21]

Since this equation is already in standard form, there is no need to convert it. Standard form is Ax + By = C. In this equation, 7 = A, 3 = B, and 10 = C. From standard form, Ax + By = C equals negative A over B.

7x + 3y = 10

↓

\displaystyle\ m= \frac{-7}{-3}

Then you'd simplify.

\displaystyle\ m=\frac{7}{3}

The slope cannot be simplified any more, so this would be the final answer.

|

|

<em>- Marlon Nunez</em>

7 0
3 years ago
For Restaurant A, the owner wants to advertise a good cleanliness score to his customers. Which measure would make his score see
Semenov [28]

Answer:

median

Step-by-step explanation:

the median would make the score as good as possible, because there could be possible outliers. this really depends on if there are outliers or not. here is an example of what i need:

say you are trying to show your parents your grades:

here are your scores:

38, 88, 90, 91, 93, 95, 100

the median would be 91, which looks better.

the mean would be 85.

even though a <em>majority</em> of your grades are good, the one 38 makes the average go down. therefore, the median is a better advertiser.

8 0
3 years ago
Salma is training for a marathon. This week she wants to run a total of 60 miles. She ran 8.55 miles on each of the first 3 days
MArishka [77]

Answer:

51.45 miles

Step-by-step explanation:

7 days = 60 miles

3 days = 8.55 miles

60 - 8.55 = 51.45 miles

6 0
3 years ago
Other questions:
  • A group of mountain climbers begin an expedition with 270 pounds of food. They plan to eat a total of 15 pounds per day. Write a
    15·2 answers
  • How many length 6 passwords with 1 number 1 upper and 1 lower?
    5·2 answers
  • 5x=k-14 solve for x (literal equation)
    8·2 answers
  • How do I solve this? I need help and I can’t figure it out!!
    13·1 answer
  • The value for the area A of the figure is given. Write and solve a compound inequality for the value of x in the figure.
    9·1 answer
  • What are the x-intercept and y-intercept of the graph of y=−12x+4y=−12x+4 ?
    13·1 answer
  • Select the equations with a coefficient of 6.
    12·1 answer
  • How many miles can you drive in 1/2 hour
    6·1 answer
  • 100 and brainliest if you tell me ur favorite anime :]
    10·2 answers
  • Part 4: Model a real-world problem using an ellipse. An artist wants to make an elliptical sign out of a rectangular piece of wo
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!