### What is the probability that the sum of the numbers on two dice is even when they are rolled?

This problem aims to familiarize us with random events and their predictable outcomes. The concepts required to solve this problem are mostly related to probability, and probability distribution. So probability is a method to predict the occurrence of a random event, and its value can be between zero and one. It measures the likelihood of […]

### What is the smallest possible depth of a leaf in a decision tree for a comparison sort?

This problem aims to familiarize us with permutations and decision trees. The concepts required to solve this problem are related to algorithms and data structures which include computation, permutation, combination, and decision trees. In data structures, permutation correlates to the action of organizing all the components of a set into an arrangement or order. We can […]

### Two components of a minicomputer have the following joint PDF for their useful lifetimes X and Y:

begin{equation*}f(x,y)=left{begin{array}{ll}xe^{-x(1+y)}&quad xgeq 0space andspace ygeq 0 \ 0 &quad otherwiseend{array}right.end{equation*} Find the probability that the lifetime X of the first component exceeds 3. Find the marginal probability density functions. Find the probability that the lifespan of at most one component surpasses 5 This problem aims to familiarize us with probability and statistics. The concepts required to solve […]

### In a poker hand consisting of 5 cards, find the probability of holding 3 aces.

This article aims to determine the probability of holding $3$ aces in a poker hand of $5$. The article uses the background concept of probability and combination. To solve problems like this, the idea of combinations should be clear. A combination combines $n$ things $k$ at once without repetition. The formula to find the combination is: [binom […]

### The cdf a certain college library checkout duration X is as follows:

[F(x) space = space begin{Bmatrix} 0 &  x<0\ frac{4x^2}{49} & 0le x< 3.5 \1 & 3.5 le x end{Bmatrix}] Using the above function to compute the following. Read moreIn how many different orders can five runners finish a race if no ties are allowed?– $P(xle 1)$ – $P(0.5 le x le 1)$ […]