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nirvana33 [79]
2 years ago
5

How do you calculate the mean and standard deviation for a discrete random variable?

Mathematics
1 answer:
Triss [41]2 years ago
8 0

Answer:

For a discrete random variable the standard deviation is calculated by summing the product of the square of the difference between the value of the random variable and the expected value, and the associated probability of the value of the random variable, taken over all of the values of the random variable, and finally

Step-by-step explanation:

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Anaya makes 14 baskets during her game. Some of these baskets were worth two points and others were worth three points. In total
Valentin [98]

Answer:she made 12 two points basket.

Step-by-step explanation:

Let x represent the number of baskets that were worth two points.

Let y represent the number of baskets that were worth three points.

Anaya makes 14 baskets during her game.

This means that

x + y = 14

Some of these baskets were worth two points and others were worth three points. In total she scored 30 points. His means that

2x + 3y = 30 - - - - - - - - - -1

Substituting x = 14 - y into equation 1, it becomes

2(14 - y) + 3y = 30

28 - 2y + 3y = 30

- 2y + 3y = 30 - 28

y = 2

Substituting y = 2 into x = 14 - y, it becomes

x = 14 - 2

x = 12

7 0
3 years ago
There is a bag filled with 5 blue and 6 red marbles.
Sidana [21]

Answer:

6/11

Step-by-step explanation:

probability

6+5=11

so 6/11

6 0
3 years ago
Read 2 more answers
4x+8=22-6 solve for x
Digiron [165]
=> 4x = 16 - 8
=>4x= 8
=> x= 2

in short the answer is 2
6 0
3 years ago
Rewrite the equation below so that it does not have fractions.
Leviafan [203]

9514 1404 393

Answer:

  8x -24 = 9y

Step-by-step explanation:

We assume your equation is ...

  2/3x -2 = 3/4y

__

Fractions can be eliminated by multiplying the equation by the least common denominator of the fractions.

  LCM(3, 4) = 12

Multiplying the equation by 12 gives you ...

  12(2/3x -2) = 12(3/4y)

  8x -24 = 9y

5 0
3 years ago
A bag has 8 bagels. Three of the bagels r cranberry. What % of the bagels r cranberry?
Solnce55 [7]
It'll will be 24% because it's like a fraction so three cranberry in a bag of 8 so 3/8 8x3 will be 24 then just add the percents
5 0
3 years ago
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