MHT CET · Maths · Probability
A die is thrown 100 times. If the success is in getting an even number, then the variance of number of successes is
- A \(1.10\)
- B \(25\)
- C 50
- D 100
Answer & Solution
Correct Answer
(B) \(25\)
Step-by-step Solution
Detailed explanation
Let
A = event "Obtainimen an even mumber when a fail tie is therwn
\(\therefore p=\frac{3}{6}=\frac{1}{2} \Rightarrow 1-1-p-\frac{1}{2}\)
\(\therefore\) Varianco ovor 100 trails \(-1100-100 \times \frac{1}{2} \times \frac{1}{2}-25\)
A = event "Obtainimen an even mumber when a fail tie is therwn
\(\therefore p=\frac{3}{6}=\frac{1}{2} \Rightarrow 1-1-p-\frac{1}{2}\)
\(\therefore\) Varianco ovor 100 trails \(-1100-100 \times \frac{1}{2} \times \frac{1}{2}-25\)
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