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29 Oct 2021
Given information
A group of freshmen was included in the study. They were asked about their opinion on a question. If a freshman answered with a ‘yes’, it was considered a success, otherwise failure.
The random variable is defined as,
Number of freshmen selected from the study until the first one who replied “yes”.
Step-by-step explanation
Step 1.
is clearly a discrete random variable. It may be the case either the first freshman itself replies ‘yes’ and the experiment stops, or the experiment keeps on going untill the last freshman is asked.
In the first case, the value of is while in the last case value of is .
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