A discrete random variable X is defined as the number of heads in 4 independent coin flips. What is the probability that X equals 3?
Introduction
The answer I provided describes the probability calculation for a discrete random variable, specifically the number of heads in 4 independent coin flips. In statistics, a discrete random variable is a variable that can take on a countable number of distinct values, such as the number of heads in a series of coin flips. The probability of a discrete random variable taking on a specific value can be calculated using the binomial probability formula, which takes into account the number of trials, the number of successful outcomes, and the probability of success on each trial. The answer provides an example of how this formula can be used to find the probability of getting exactly 3 heads in 4 coin flips, and concludes that the probability is 50%.
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