Register

Test by Bikram | Mathematics | Test 2 | Question: 16

• edited by
275 views

1 Answer

Best answer
3 votes
3 votes

Mean of Random Variable or Expectation =  Σx.f(x)  

Now, sum of function from (0,1) can be interpreted as area under the curve so we can perform integration.

So Σx.f(x) = $\int_{0}^{1}x(6x(1+x))/5$ 
 

solving the integral for limits (simple calculation) we get Answer = 0.7

• selected by
User Avatar
Voting & Accepting an answer helps improve the community
Answer:
← PreviousNext →
← Previous in categoryNext in category →

Related questions

5 votes
5 votes
2 answers
1
Bikram asked May 24, 2017
609 views
Test by Bikram | Mathematics | Test 2 | Question: 30
Let $S$ be the set $\{1,2,3, \dots ,8\}$. Let $n$ be the number of sets of two non-empty disjoint subsets of $S$. The value of $n$ is _______.
Let $S$ be the set $\{1,2,3, \dots ,8\}$. Let $n$ be the number of sets of two non-empty disjoint subsets of $S$. The value of $n$ is _______.
User Avatar
5 votes
5 votes
1 answer
2
Bikram asked May 24, 2017
507 views
Test by Bikram | Mathematics | Test 2 | Question: 29
Total number of ways we can fill a $4 \times 4$ matrix by $0$ and $1$’s such that every row and column contains odd no of $0$'s and $1$'s is ________.
Total number of ways we can fill a $4 \times 4$ matrix by $0$ and $1$’s such that every row and column contains odd no of $0$'s and $1$'s is ________.
User Avatar
3 votes
3 votes
1 answer
3
Bikram asked May 24, 2017
290 views
Test by Bikram | Mathematics | Test 2 | Question: 26
$O(G) = 12$ and $G$ is cyclic. The total number of generators possible in $G$ are __________.
$O(G) = 12$ and $G$ is cyclic. The total number of generators possible in $G$ are __________.
User Avatar
8 votes
8 votes
3 answers
4
Bikram asked May 24, 2017
438 views
Test by Bikram | Mathematics | Test 2 | Question: 25
See the above table of a,b,c,d. The total number of subgroups possible from the above diagram are _______.
See the above table of a,b,c,d. The total number of subgroups possible from the above diagram are _______.
User Avatar
Link Copied!