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Pavlova-9 [17]
3 years ago
9

Which of the following is a valid probability distribution? Please help me i cant get this one right

Mathematics
2 answers:
Dimas [21]3 years ago
7 0

Answer:

Probability D

Step-by-step explanation:

The probability distribution should be 1

Probability A

Add the probabilities

.2+.2+.2+.2+.2+.2 = 1.2  >1  cannot happen

Probability B

Add the probabilities

.1+.2+.3+.3+.2+.1 = 1.2  >1  cannot happen

Probability C

Add the probabilities

.1+.2+.3+0+.1+.1 = .8  <1  the probability should be 1

Probability D

Add the probabilities

.2+.1+.1+.5+0+.1 = 1 This is a correct probability distribution

daser333 [38]3 years ago
7 0

Answer:

The answer is probability D.

Step-by-step explanation:

The probability distribution should be 1

Probability A

Add the probabilities

.2+.2+.2+.2+.2+.2 = 1.2  >1  cannot happen

Probability B

Add the probabilities

.1+.2+.3+.3+.2+.1 = 1.2  >1  cannot happen

Probability C

Add the probabilities

.1+.2+.3+0+.1+.1 = .8  <1  the probability should be 1

Probability D

Add the probabilities

.2+.1+.1+.5+0+.1 = 1 This is a correct probability distribution

Read more on Brainly.com - brainly.com/question/16590381#readmore

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Can the sides of a triangle have lengths 2, 10, and 11?<br> yes<br> no
madreJ [45]

Answer:

Yes

Step-by-step explanation:

Triangle inequality theorem states that a triangle can exist if

a + b > c; a + c > b; b + c > a

a = 2; b = 10; c = 11

2 + 10 = 12; 12 > 11.

2 + 11 = 13; 13 > 10.

10 + 11 = 21; 21 > 2.

4 0
2 years ago
A stray dog ate 25 of your muffins that was 5/6 of all of them with how many did you start?
Maru [420]

Answer:

30 = total muffins

Step-by-step explanation:

To determine how many muffins were eaten, we take the total muffins times the fraction that were eaten

eaten muffins = total muffins * fraction

25 = total muffins* 5/6

Multiply each side by 6/5

6/5*25 = total muffins *5/6*6/5

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3 0
3 years ago
The ratio of cars to trucks is 9:4. The ratio of trucks to SUV's is 12:21. There are 54 cars.
Elenna [48]

Answer:

Number of trucks = 24

Number of SUVs = 24

Step-by-step explanation:

A)

The ratio of cars to trucks is 9:4

The total ratio of cars to trucks is

9+4 = 13

Let x = sum of cars and trucks.

There are 54 cars. Therefore,

x = 54 + t trucks

Number of cars = ratio of cars/ total ratio × sum of cars and trucks. This means,

54 = 9/13 × x

9x / 13 = 54

9x = 13 × 54

9x = 702

x = 702 / 9 = 78

x = 54 + t trucks = number of trucks = 78 = 54 + t trucks

t trucks = 78 - 54 = 24

Number of trucks = 24

B)

The ratio of trucks to SUVs is 12:21

The total ratio of cars to trucks is

12 + 21 = 33

Let y = sum of trucks and SUVs

There are 24 trucks. Therefore,

x = 24 + s SUVs

Number of trucks = ratio of trucks / total ratio × sum of trucks and SUVs. This means,

24 = 12 / 33 × y

12y / 33 = 24

12y = 24 × 33

12y = 792

y = 792 / 12 = 66

y = 24 + s SUVs

66 = 24 + s SUVs

s SUVs = 66 - 24 = 42

Number of SUVs = 24

7 0
3 years ago
Write an equation for the graph below in the terms of x
melamori03 [73]
Y= -3/2x
Because of rise over run so the rise is positive three and the run is negative 2 since it goes towards the negative direction
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2 years ago
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