Answer:
a substrate control is an uncontaminated sample
Explanation:
it allows forensic scientiststo compare the two samples to better observe whether a flammable liquid is present
A random variable is a numerical representation of the result of an experiment in statistics. Any qualities, quantity, or number that can be gauged or tallied qualifies as a variable.
What is the definition of a random variable?
A random variable is a variable with an unknown value or a function that gives values to each of the results of an experiment. There are two types of random variables: discrete (having specified values) and continuous (any value in a continuous range).
What are some examples of random variables?
Every event in an experiment has a probability, which ranges from 0 to 1, and the total probability of the experiment is 1. The number of outcomes from rolling a die, the number of outcomes from pulling a jack of spades from a deck of cards, and other examples are examples of discrete random variables.
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Being denied the opportunity to work due to race, gender, or sexual orientation would be a violation of one of the basic human rights.
<h3>What are basic human rights?</h3>
The rights contained under international human rights law, which provide some rights as well as freedom to the citizens around the globe are known as the basic human rights.
Right to work is a basic human right and one cannot be discriminated for his or her right to work based on their race, gender, age or any such criteria.
Hence, option A holds true regarding the basic human rights.
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