difference between random selection and random assignment

These are called accidental errors, which occur irregularly and at random, in magnitude and direction. (When the experiment is repeated, one may obtain different results each tim..

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..

The data in the graph is the result of a survey conducted to know the percentage of people with different hair color. Find the probability that a person selected at random will have brown hair. => 1 5 or 4 25 or 3 5 or 1 25..

Determine whether the events are mutually exclusive: The person selected at random is a Democrat The person selected at random is an Independent => Yes or No..

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..

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

The circle graph represents the different occupations that the students of a school want to choose. Find the probability that a student selected at random would choose his/her occupation as a 'Doctor'. => 27 50 or 47 50 or 19 100 or 11 50..

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...

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..