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GarryVolchara [31]
3 years ago
10

Evaluate the cumulative distribution function, F, for the given random variable, X, at specified values: also determine the requ

ested probabilities. f(x) = (125/31) (1/5)^x, x = 1, 2, 3 Give exact answers in form of fraction. F(1) = ____________F(2) = __________F(3) =____________ (a) P(X lessthanorequalto 1.5) =____________(b) P(X lessthanorequalto 3) =___________(c) P(X > 2) =__________(d) P(1 < X lessthanorequalto 2) =______
Mathematics
1 answer:
Aleksandr-060686 [28]3 years ago
4 0

Answer:

Step-by-step explanation:

Given that x is a random variable with probability density function given as

f(x) =\frac{125}{31} *\(frac{1}{5} )^x, x=1,2,3

To find cumulative function for x

F(1) = f(1) = \frac{125}{31*5} =\frac{25}{31}

F(2) = f(1)+f(2)\\=\frac{25}{31} +\frac{125}{31}*\frac{1}{25}=\frac{30}{31}

F(3) = f(1)+f(2)+f(3)\\= \frac{30}{31}+\frac{125}{31*125}\\=1

a) P(X lessthanorequalto 1.5)

=P(X\leq 1.5) = F(1)\\=\frac{25}{31}

(b) P(X lessthanorequalto 3) =__F(3) = 1_________

(c) P(X > 2) =__f(3) = 1/31________

(d) P(1 < X lessthanorequalto 2) =__f(2) = 25/31____

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Answer:

(a) gcd(20, 12)=4

(b) gcd(100, 36)=4

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Step-by-step explanation:

The Euclidean algorithm is an efficient method for computing the greatest common divisor of two integers, without explicitly factoring the two integers.

The Euclidean algorithm solves the problem:

<em>                                   Given integers </em>a, b<em>, find </em>d=gcd(a,b)<em />

Here is an outline of the steps:

  1. Let a=x, b=y.
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  3. If r=0, stop and output y; this is the gcd of a, b.
  4. If r\neq 0, replace (x,y) by (y,r). Go to step 2.

The division algorithm is an algorithm in which given 2 integers N and D, it computes their quotient Q and remainder R.

Let's say we have to divide N (dividend) by D (divisor). We will take the following steps:

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Step 2: The resulting number is known as the remainder R, and the number of times that D is subtracted is called the quotient Q.

(a) To find gcd(20, 12) we apply the Euclidean algorithm:

20 = 12\cdot 1 + 8\\ 12 = 8\cdot 1 + 4\\ 8 = 4\cdot 2 + 0

The process stops since we reached 0, and we obtain gcd(20, 12)=4.

(b) To find gcd(100, 36) we apply the Euclidean algorithm:

100 = 36\cdot 2 + 28\\ 36 = 28\cdot1 + 8\\ 28 = 8\cdot 3 + 4\\ 8 = 4\cdot 2 + 0

The process stops since we reached 0, and we obtain gcd(100, 36)=4.

(c) To find gcd(496,207 ) we apply the Euclidean algorithm:

496 = 207\cdot 2 + 82\\ 207 = 82\cdot 2 + 43\\ 82 = 43\cdot 1 + 39\\ 43 = 39\cdot 1 + 4\\ 39 = 4\cdot 9 + 3\\ 4 = 3\cdot 1 + 1\\ 3 = 1\cdot 3 + 0

The process stops since we reached 0, and we obtain gcd(496,207 )=1.

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Answer:

Step-by-step explanation:

-14 = -14/1 = - 14.0

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