Question:easy

Which of the following is not a property of a Binomial distribution?

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For a binomial distribution: \[ n=\text{fixed},\quad p=\text{constant},\quad \text{trials independent} \] and each trial has only two outcomes: success or failure.
Updated On: Jun 22, 2026
  • Random experiment consists of a sequence of \(n\) identical trials
  • Each outcome can be referred to as a success or a failure
  • The probabilities of the two outcomes can change from one trial to the next
  • The trials are independent
Show Solution

The Correct Option is C

Solution and Explanation

Step 1: Recall what a binomial experiment requires.
A binomial distribution rests on a few fixed conditions, and the odd-one-out among the options is the false one.
Step 2: Condition one, fixed identical trials.
There must be a fixed number $n$ of identical trials. So option (1) is a true property.
Step 3: Condition two, two outcomes.
Each trial has only two outcomes, success or failure. So option (2) is a true property.
Step 4: Condition three, constant probability.
The probability of success must stay the same from trial to trial. Option (3) claims the probabilities can change, which violates this rule.
Step 5: Condition four, independence.
The trials must be independent. So option (4) is a true property.
Step 6: Pick the wrong statement.
The only statement that is not a property is option (3).
\[ \boxed{\text{The probabilities of the two outcomes can change from one trial to the next}} \]
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