Which of the following random variables is geometric?

The number of 1s when rolling a die 25 times
Ob
The number of digits in a randomly selected row until a 3 is found
Ос
The number of queens dealt from a shuffled deck of 52 cards in a seven-card hand
Od
The number of tails when a coin is tossed 50 times
The number of 4s in a row of 30 random digits

Answer:

b. The number of digits in a randomly selected row until a 3 is found.

Explanation:

A random variable often used in statistics and probability, is a variable that has its possible values as numerical outcomes of a random experiment or phenomenon. It is usually denoted by a capital letter, such as X.

In statistics and probability, random variables are either continuous or discrete.

1. A continuous random variable is a variable that has its possible values as an infinite value, meaning it cannot be counted.

2. A discrete random variable is a variable that has its possible values as a finite value, meaning it can be counted.

Also, any random variable that meets certain conditions defined in a research study.

Hence, an example of a geometric random variables is the number of digits in a randomly selected row until a 3 is found.

All of the following are benefits of attending a community college except that:
A. there are no admission requirements.
B. it's less expensive.
O C. there are smaller teacher-to-student ratios.
O D. it's easier to receive a bachelor's degree there.

How does energy flow through a food web?

A) The decomposers start the cycle by producing energy from decaying organisms. The consumers get energy from the sun and provide it to the producers in the form of fertilizer.

B) The sun provides energy to the producers (plants) that are eaten by consumers. Less powerful consumers are eaten by more powerful consumers. The decomposers break down dead organisms.

C) The sun provides energy directly to the consumers that feed the producers. The producers return energy to the sun. The decomposers break down dead organisms.

D) The producers release gas energy to the sun. The decomposers provide energy to both producers and consumers. The consumers get energy only from plant producers.