Why should the sum of the probabilities in a probability distribution always equal to 1?

Answers

Answer 1

Answer:

If u add probabilities of all possible outcomes that should be one, because classical definition of probability is number of possible out comes divided by total number of outcomes. When you add all probabilities numerator and denominator are equal so answer is one.

Answer 2

Answer:

The total probability of a set of related events sums up to 1 because the probability of each individual event in the set is a fraction of the whole. For example, suppose you flip a fair coin a large number of times.


Related Questions

Complete the table for the given rule.
Rule: y = 5x

Answers

where is the table for this?
is there a picture that is supposed to go with this??

choose the best estimate for the mass of an apple
A. 25 g
B. 250 g
C. 1,000 g
D. 2,000 g
boi you bettter helpp.

Answers

Gotchu cuh. It’s 250g. This math stuff too easy

Answer:

25 or 250 i would go wit 250 but i fr dont know

Step-by-step explanation:

Find an equation in point slope form for the line haveing the slope m=-3 and containing the point (6 7)

Answers

Answer:

7-y=-3(6-x)

Step-by-step explanation:

Point slope form:

[tex]y-y_{1} = m(x-x_{1} )[/tex]

Substitute y in for 7. Substitute x in for 6. Substitute m in for -3.

7-y=-3(6-x)

Which of the following is not a statement?
a) Math is hard.
b) v2 is a rational number.
C) Plants require water to live.
d) Lake Martin is a man-made lake.

Answers

This is tricky maybe C

A ) I am just guessing

isbslw

Consider function fand function g.
() = In
g(x) = -5 In
How does the graph of function g compare with the graph of function ?
Unlike the graph of function f, the graph of function ghas a y-intercept.
The graph of function g is the graph of function fvertically stretched by a factor of 5.
Unlike the graph of function f, the graph of function g decreases as x increases.
The graphs of both functions have a vertical asymptote of r = 0.
Unlike the graph of function f, the graph of function g has a domain of {+1 -5 < x < 0}
Reset
Next

Answers

Answer:

I believe it is the first third and fourth options, I am not entirely sure for I mostly guessed on them, but they make the most sense when looking at the graph.

Step-by-step explanation:

It can be deduced that the graph of function f and g compare as:

Unlike the graph of function f, the graph of function g decreases as x increases.The graph of both functions have a vertical asymptote of x = 0.

What is a function?

A function in mathematics simply means the relation between a set of inputs and a set of permissible outputs.

In this case, the graph of both functions have a vertical asymptote of x = 0. This is because the divisor equals to zero for a value of x.

Learn more about graphs on:

https://brainly.com/question/25020119

answer the following by setting up and following as a proporition
I need it quick
at a bad wolfs concert there are fifteen males for every twenty three people. if 23,675 people attend the concert how man males attend the concert?

Answers

23,675 people * (15 males)/(23 people) ≈ 15,440 makes

please help, thanks if you do (will mark brainliest)

Answers

(4,9) is the answer!!!

What does b stand for 11.3 > b/4.3

Answers

Answer:

b = 45.69

Step-by-step explanation:

5 x 5 = 25

25 x 2 & and a half = 45.69

In the inequality expression "11.3 > b/4.3," the variable "b" represents an unknown numerical value.

In the inequality 11.3 > b/4.3, b is the variable.

The inequality is stating that 11.3 is greater than the result of dividing "b" by 4.3.

The purpose of the inequality is to compare the value of 11.3 with the value of "b/4.3" and determine if 11.3 is greater or not.

The variable "b" can take any value that satisfies the inequality.

Hence, in the inequality b stands for unknown value or variable.

To learn more on Inequality click:

https://brainly.com/question/28823603

#SPJ6

Can someone please help me with my math homework?

Answers

Where’s the picture

Given an absolute value function f(x)=|x|, what is the effect of adding a constant k to the function?

Answers

Answer: the graph of the resulting function, |x| + k, is the graph of f (x) shifted k units up

Step-by-step explanation:

just took the test

Select all the equations that describe each situation and then find the solution.

Kiran’s backpack weighs 3 pounds less than Clare’s backpack. Clare’s backpack weighs 14 pounds. How much does Kiran’s backpack weigh?

Answers

Answer:

Its 11

Step-by-step explanation:

A candy-wrapping robot can wrap 435 pieces of candy in 5 minutes. Calculate the unit rate. How many pieces of candy can the robot wrap in 1 minute?

Answers

Answer:

Step-by-step explanation:

435/5=87

87 candy per min

Evaluate 4(-9) i need help lol

Answers

Answer:

-36

Step-by-step explanation:

How are you in college lol

Answer:

Multiply  

4  by  − 9 .

− 36

Step-by-step explanation:

12 out of the 50 U.S. states have names that start with a vowel. What percentage of U.S. states' names start with a vowel

Answers

Answer:

24% of the U.S. states have names that start with vowels

Step-by-step explanation:

12 ÷ 50 = 0.24

0.24 × 100 = 24%

Answer:

24 % of the U.S. states' names start with a vowel

Step-by-step explanation:

12 out of 50 vcan be written in math terms as;

12 / 50 which equals the decimal form of a percent as shown;

12 / 50 = 0.24

which in percent form is: 24 %

define acute, right angle, obtuse, straight angle, reflex​

Answers

Answer: here

Step-by-step explanation:

Acute Angle - An angle less than 90 degrees. Right Angle - An angle that is exactly 90 degrees. Obtuse Angle - An angle more than 90 degrees and less than 180 degrees. Straight Angle - An angle that is exactly 180 degrees. Reflex Angle - An angle greater than 180 degrees and less than 360 degrees.

Answer:

An Acute angle is an angle less than 90 degrees

An obtuse angle is an angle greater than 90 degrees

A right angle is an angle that is exactly 90 degrees

A straight angle is an angle that is exactly 180 degrees

A reflex is an angle greater than 180 degrees but less than 360 degrees

Step-by-step explanation:


Penny is training for a race. First she ran 1/10 of a mile
4 times. Next she ran 1/5 of a mile 3 times. Then she ran 3/10 of a mile two times. How far did Penny run
during her training?
Show your work.

Answers

I think it’s 8/5 miles


There are 48 students in a certain class, 25% of this are girls, How many
boys are in the class?

Answers

Answer:

There are 36 boys

Step-by-step explanation:

4 - (2x - 3) ≈ 3 what is the value of x

Answers

Answer: [tex]7-2x[/tex]

Step-by-step explanation:

Aight come on i need the answer to this question

Answers

Answer:

A, E, F

Step-by-step explanation:

2/9 is the fraction equivalent of 0.222222 repeating. 4/15 is the fraction equivalent 0.266667 repeating. 7/11 is the fraction equivalent of 0.636364 repeating.

Which is the graph of f(x)=3^x

Answers

Answer:

Now plot the points in the coordinate plane.

Finally draw a smooth curve joining the points.

Step-by-step explanation:

Yeshdjsksjshwndjskajahajaa

-5х + Зу = -8
3х - 7y = -3

Answers

Answer:

wrong

Step-by-step explanation:

-5x + 3y, you can’t add those together since they aren’t like numbers

3x - 7y, can’t be done either since again, they aren’t like numbers.

like numbers include the same variable or no variable, which means you cant do -5x + 3y but you can to -5x + 3x. you can add those together since both of the numbers have the variable “x” while 3y and 7y have the same variable “y” therefore those can be added together.

since there isn’t a way to add those, both of those answers are not only wrong, but they’re also in simplest form.

This diagram shows three small squares and two rectangles composed of 10 small squares.



Jada says this diagram can represent 230. What does a small square represent for Jada?

Answers

Answer:

230 is the answer for this

Step-by-step explanation:

etrs grvbtczb

Answer:

yes

Step-by-step explanation:

Solve the equation for all real solutions in simplest form.
3z^2+17z+16=0

Answers

Answer:

[tex]x=\frac{-17+\sqrt{97}}{6}[/tex], [tex]x=\frac{-17-\sqrt{97}}{6}[/tex]

Step-by-step explanation:

Use the quadratic formula to solve for all real solutions.

Quadratic formula: [tex]x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}[/tex]

Plug in and solve:

[tex]x=\frac{-17\pm\sqrt{17^2-4(3)(16)}}{2(3)}\\\\x=\frac{-17\pm\sqrt{289-4(3)(16)}}{2(3)}\\\\x=\frac{-17\pm\sqrt{289-12(16)}}{2(3)}\\\\x=\frac{-17\pm\sqrt{289-192}}{2(3)}\\\\x=\frac{-17\pm\sqrt{97}}{6}\\[/tex]

Since that's the farthest we can simplify to, your answers would be the positive and negative versions of the expression:

[tex]x=\frac{-17+\sqrt{97}}{6}[/tex]

and

[tex]x=\frac{-17-\sqrt{97}}{6}[/tex]

Use the ruler provided to measure the radius of the circle to the nearest centimeter.
Which measurement is closest to the area of the circle in square centimeters?

Answers

Answer

its B

Step-by-step explanation:

Answer:

43.96 2 cm2

Step-by-step explanation:

Match each statement with the correct reasoning in the proof below.

helpl

Answers

Answer:

When demand for goods increases - Price will rise

When supply of goods increases - Prices will fall

Step-by-step explanation:

Supply and demand function works oppositely in economy. When there is huge demand for goods and supply is short then prices will rise. This is because supply is not sufficient to meet the demand and the market is not in equilibrium position.

-7 es numero natural?

Answers

Answer:

no no es un numero natura,los numeros naturales son los que estan completos como el 1 el 2 el 3 y mas numeros los que son menos o con punto decimal no lo son

Which equation shows the relationship between d and t?

Answers

Answer:

d=50t

Step-by-step explanation:

for every d, t is d times 50

Top one because 50x2=100 distance

8 1/5-2 7/8 Fractions math

Answers

Answer:

5  13 /40

Step-by-step explanation:

hope this helps :))

Four friends shared 7 chocolate bars. Each of them was given an equal share of the chocolate bars. How many chocolate bars did each person get?

Answers

Answer:

19. 25 chocolate bars

Step-by-step explanation:

77 divided by 4=19. 25

Top Golf charges $12 for each hour. You can spend no more than $60.
Which of the following inequalities could help you solve for all the possible hours, h,
that you can golf for?

Answers

Answer:

Step-by-step explanation:

12x<60

The < will have a underline

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