All categories

2 years ago

The variable that assigns a real number value to an event in a sample space is called.

Mathematics

1 answer:

Bas_tet [7]2 years ago

5 0

The variable that assigns a real number value to an event in a sample space is called Random variable.

<h3>What is Random variable?</h3>

A random variable is a variable that can take on many values. This is because there can be several outcomes of a random occurrence. Thus, a random variable should not be confused with an algebraic variable. An algebraic variable represents the value of an unknown quantity in an algebraic equation that can be calculated. On the other hand, a random variable can have a set of values that could be the resulting outcome of a random experiment.

As, A random variable can be defined as a type of variable whose value depends upon the numerical outcomes of a certain random phenomenon. It is also known as a stochastic variable. Random variables are always real numbers as they are required to be measurable.

For example

Suppose 2 dice are rolled and the random variable, X, is used to represent the sum of the numbers. Then, the smallest value of X will be equal to 2 (1 + 1), while the highest value would be 12 (6 + 6). Thus, X could take on any value between 2 to 12 (inclusive). Now if probabilities are attached to each outcome then the probability distribution of X can be determined.

Hence, The variable that assigns a real number value to an event in a sample space is called Random variable.

Learn more about random variable here:

brainly.com/question/17238189

#SPJ4

You might be interested in

Tiffany paid 46 cents for 3 ounces of mixed candy. Tony told Tiffany that he could go to a different store and get a better deal

irina1246 [14]

In order to figure this out, we need to find the price per ounce of candy. We can do this by dividing the price of the candy by the amount of ounces of candy that were bought.

Tiffany bought 3 ounces and paid 46 cents, so she bought candy with a rate of 46/3 = 15.33 cents per ounce.

Tony bought 13 ounces of candy and paid 76 cents. He bought candy with a rate of 76/13 = 5.85 cents per ounce.

Because Tony is paying less for each ounce, he made the better buy.

8 0

4 years ago

Please help me !!<br> slope and y-intercept<br> *image attached

enot [183]

Answer:

pls sorry i dont know the answer can you say the answer of it any one can to me

i also needed the answer toooooooooo..............................................................

Step-by-step explanation:

3 0

4 years ago

Read 2 more answers

an inlet pipe and a hose together can fill the pond in 10 hours. The inlet pipe alone can complete the job in one hour less time

Annette [7]

Answer:

The hose pipe can fill the pond in 21.465 hours.

The inlet pipe can fill the pond in 20.465 hours.

Step-by-step explanation:

Given that, a inlet pipe and a hose pipe together can fill the pond in 10 hours.

The inlet pipe alone can fill the pond in one hour less time than the hose pipe can fill the pond.

Let the hose pipe can complete the job in x hours.

Then the inlet pipe can fill the pond in (x-1) hours.

The rate of filling of hose pipe is $=\frac{1}{x}$

The rate of filling of inlet pipe is $=\frac{1}{x-1}$

The rate of filling of both pipes is = $\frac 1{10}$

According to the problem,

$\frac{1}{x}+\frac{1}{x-1}=\frac{1}{10}$

$\Rightarrow \frac{x-1+x}{x(x-1)}=\frac1{10}$ [ simplifying the fraction]

$\Rightarrow \frac{2x-1}{x^2-x}=\frac1{10}$

$\Rightarrow 10(2x-1)= x^2-x$ [ Multiplying 10(x²-x) both sides]

$\Rightarrow x^2-x= 20x-10$

$\Rightarrow x^2-x-20x+10=0$ [ simplifying ]

$\Rightarrow x^2-21x+10=0$

$\Rightarrow x=\frac{-(-21)\pm\sqrt{(-21)^2-4.1.10}}{2.1}$ [ applying quadratic formula]

$\Rightarrow x=\frac{21\pm21.93}{2.1}$

⇒ x= 21.465, -0.465

x= - 0.465 does not possible, since time can not be negative.

∴x=21.465

The hose pipe can fill the pond in 21.465 hours.

The inlet pipe can fill the pond in (21.465-1)=20.465 hours.

3 0

4 years ago

Find the shaded area. Round your answer to the nearest tenth.

Fofino [41]

Answer:

${22cm}^{2}$

to the nearest tenth

Step-by-step explanation:

find the area of the semi circle

$\frac{\pi \times 5}{2} = {7.85cm}^{2}$

find area of the whole shape

$5 \times 6 = {30cm}^{2}$

then subtract both areas to get shaded area

$30 - 7.85 = 22.15$

7 0

3 years ago

Roshonda begins riding her bike home from school at 3:00p.M., traveling 12 miles per hour. James leaves school in a bus a quarte

weeeeeb [17]

Answer:

Step-by-step explanation:

At the point where Roshonda and James meet each other, they must have covered equal distances.

Let x represent the distance that Roshonda covered while riding from school to home and also the distance covered by James while travelling in a bus from school.

Let t represent the time it took Roshonda to cover x miles.

Distance = speed × time

Therefore

x = 12 × t = 12t

James left school 0.25 hours later at a speed of 35 miles per hour. Time spent by James in covering x miles would be t - 0.25.

Distance covered would be

x = 35(t - 0.25) = 35t - 8.75

Since the distance covered is the same, then,

12t = 35t - 8.75

35t - 12t = 8.75

23t = 8.75

t = 8.75/23 = 0.38 hours

0.38 + 0.25 = 0.63 hours

0.63 × 60 = 37.8 minutes

At about 3:38 pm, they would meet

6 0

3 years ago