Answer:
In order to calculate the expected value we can use the following formula:
And if we use the values obtained we got:
Step-by-step explanation:
Let X the random variable that represent the number of admisions at the universit, and we have this probability distribution given:
X 1060 1400 1620
P(X) 0.5 0.1 0.4
In statistics and probability analysis, the expected value "is calculated by multiplying each of the possible outcomes by the likelihood each outcome will occur and then summing all of those values".
The variance of a random variable Var(X) is the expected value of the squared deviation from the mean of X, E(X).
And the standard deviation of a random variable X is just the square root of the variance.
In order to calculate the expected value we can use the following formula:
And if we use the values obtained we got:
The equation of the line is y - 3 = 5(x - 8) ⇒ c
Step-by-step explanation:
The point-slope form of the linear equation is 
, where:
- m is the slope of the line
is a point on the line
∵ The line passes through point (8 , 3)
∴ 
= 8 and 
= 3
∵ The slope of the line is 5
∴ m = 5
- Substitute these values in the form of the equation below
∵
∴ y - 3 = 5(x - 8)
The equation of the line is y - 3 = 5(x - 8)
Learn more:
You can learn more about the linear equations in brainly.com/question/1284310
#LearnwithBrainly
You can use addition to solve this problem. 7+_= 15
real numbers hope it helps
Answer:
112
Step-by-step explanation:
Define the variables:
x = number of French students sent by the school
Write the equation:
x / 21 = 1 / 3
Solve:
x = 7
The school sent 7 French students and 21 German students, for a total of 28 students.
The other 3 schools also sent 28 students. So the total number of students sent is:
4 × 28 = 112
