random assignment versus random selection

What is the probability of the cone being selected at random from the figures? => 1 10 or 1 5 or 1 7 or 1 12..

Let S be a sample space associated with a given random experiment. A real valued function X which assigns to each w i S, a unique real number, X( w i ) = x i is called a random variable . Two types of random variables are 1. Continuous h..

A number is selected at random from 1 to 15 . What is the probability that it is a prime number? => 1 6 or 1 2 or 1 15 or 2 5..

Let S be a sample space associated with a given random experiment. A real valued function X which assigns to each w i S, a unique real number, X( w i ) = x i is called a random variabl..

A medical researcher wishes to test the effects of two diets and the time of day on the sodium level in a person's blood. Twenty people are randomly selected, and five are randomly assigned to each of the four groups. Find F A × B and analyze the data s..

There are 20 pens and 25 pencils in a box. If a student selects two of them at random, then what is the probability of selecting a pen and a pencil? => 199 396 or 25 99 or 91 99 or 58 99..

In a class containing 20 boys and 15 girls, 2 students are selected at random to give a presentation. Find the probability that both the students selected are girls. => 3 4 or 3 17 or 21 38 or 9 49..

A computer selects a random number from 2 to 9. Edward wins, if the number is prime. Otherwise the computer wins. Is this game fair? => Yes or No..

If 20% of all people living in a country X are underweights, then find the probability that the three people selected at random will be underweight. => 0.04 or 0.8 or 0.008 or 0.512..

62% of the freshmen joining a university have computer. If three freshers are selected at random, what is the probability that none has a computer? => 0.055 or 0.76 or 0.238 or 0.38..