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KatRina [158]
3 years ago
8

Which of the following is an example of a random event?

Mathematics
2 answers:
taurus [48]3 years ago
7 0
A concept of an event is an extremely important in the Theory of Probabilities. Actually, it's one of the fundamental concepts, like a point in Geometry or equation in Algebra.
First of all, we consider a random experiment - any physical or mental act that has certain number of outcomes. For example, we count money in our wallet or predict tomorrow's stock market index value. In both and many other cases the random experiment results in certain outcomes (the exact amount of money, the exact stock market index value etc.) These individual outcomes are called elementary events and all such elementary events associated with a particular random experiment together form a sample space of this experiment.
More rigorously, the sample space of any random experiment is a SET and all individual elementary events (that is, the individual results of this experiment) are ELEMENTS of this set.
Now we can consider not only an individual elementary event, like exact amount of money in a wallet, but a combination of such elementary events. For instance, we can consider the result of our money counting experiment to be less than $5. This is a combined event that consists of elementary events $0, $1, $2, $3 and $4. This and other combinations of elementary events is called a random event.
Using our SET terminology, a random event is a SUBSET of a SET of all elementary events (in other words, a SUBSET of a sample space). Any such SUBSET is called a random event.
In Theory of Probabilities there is a concept of probability associated with each elementary event. If the number of elementary events is finite or countable, this probability is just a non-negative number and the sum (even infinite sum in case of countable number of elementary events) equals to 1.
The probability associated with any random event is a sum of probabilities of all elementary events that comprise it.
Lady_Fox [76]3 years ago
6 0
Random events<span> are events that do not have an exact outcome. The set of possible outcomes for a </span>random event is always more than one item or amount. For example<span>  we can think about the total amount of our money counting experiment to be less than $5. This is a combined event that have  </span>elementary events<span> $0, $1, $2, $3 and $4. This is </span><span>called a </span>random event<span>.</span> 
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a shop only buys bananas with the lengths between 13 cm and 20 cm. estimate the fraction of the 80 bananas that the shop buys
ddd [48]

Answer:

44/80

Step-by-step explanation:

draw a line from 13cm upwards to the graph line and then draw a horizontal line from that point to the y axis to find that you get 18 bananas

then draw a line from 20cm upwardsto the graph line and then draw a horizontal line from that point to the y axis to find that you get 62 bananas

62-18=44 you do this because the shop buys banana lengths between 13 and 20

only from 13 to 20 = 44

so out of 80 (the total) it should be 44/80

4 0
3 years ago
Read 2 more answers
For algebraic expression 2x4
Fynjy0 [20]

Answer:

See explanations below

Step-by-step explanation:

Given the algebraic expression 2x4– 5x3 + 4x. + 7,

a) The degree is the highest power of x in the equation, from the equation we can see that the highest power of x is 4. HEnce the degree of the equation is 4

b) The terms we have are 2x^4, -5x^3, 4x and 7. In counting, we can see that we only have 4 terms in the equation hence the number of terms is 4

c) The constant term si the term without the variable x. From the equation the only term without variable x is 7. Hence the constant term is 7

d) The number attached t x is known as its coefficient. The number besides x is 4 frim the equation. Hence the coefficient of x is 4.

e) The numerical coefficient of -5x^3 is -5 since the constant value attached to x^3 is -5

7 0
2 years ago
98 POINTS!!!<br><br>Write a polynomial function in standard form given the zeros<br><br><br>±√5 , 7
Neporo4naja [7]

Answer:

Step-by-step explanation:

Knowing the three zeros of the equation, we can set it up as follows:

(x - \sqrt{5})(x + \sqrt{5})(x - 7)

Multipying the first two expressions together gives us the following:

(x^{2} - 5)(x - 7)

Multiplying the two expressions together gives us the following:

x^{3} - 7x^{2} - 5x + 35

3 0
3 years ago
Read 2 more answers
10-24
jasenka [17]

Answer:

Like this...

Step-by-step explanation:

The best represented graph should look something like this :)

(program used is Desmos)

8 0
2 years ago
Sarah Smart purchased a renewable health club membership for $385 per year. She visited the club twice a month for two years. Wh
Marrrta [24]
Because $385 for two years is 385+385=770
Twice a month for two years=24x2=48
So 770/48=$16.04

Final answer $16.04

5 0
3 years ago
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