Question
Which of the below probability distribution has same
mean and variance?Solution
Poisson distribution is the only distribution where E(X) = VAR (X)=Lambda.Â
Population of a town is 1,02,000. If number of the male increase by 7% and Females increase by 10% then the population of town would increase by 9.5 %. ...
Total population of city P and Q is 4420 and 5940 respectively. If the ratio of number of males to females in city is P and Q is 8:5 and 5:4 respectivel...
Ratio between two numbers is 6:11 and their difference is 50. Find the sum of the given two numbers.
A sum of Rs. 594 is divided among X, Y and Z such that X gets Rs. 156 more than Y. Y gets Rs. 78 more than Z. Find the share of Z?Â
Divide Rs 1,200 between A and B in the ratio 3 : 5.
The incomes of A and B are in the ratio 2 : 3 and their expenditures are in the ratio 3 : 5. If A saves Rs 1,000 and B saves Rs 500, find the income of B.
Number of faculties in Physics and Biology in an institute is in the ratio of 3:5 respectively. If 75 more faculties join Physics, while 40 more faculti...
A shopkeeper sold three types of books i.e. fiction, non-fiction, and comics. Number of fiction books sold is 25% of the total number of books sold and ...
The ratio of the incomes of Vineet and Vidya is 15:8 respectively. Vineet saves 40% of his income while Vidya saves 25% of his income. The sum of their ...
P, Q and R together started a business. Seven times the investment of P equals eight times the investment of Q and the capital of Q is twice that of R. ...
