First slide

Random variable and probability distribution

Question

$The probability of a man hitting a target is \frac{1}{10} . The least number of shots required, so that the$
$probability of his hitting the target at least once is greater than \frac{1}{4}, is$

Easy

Solution

$Given success probability is p = \frac{1}{10}; q = 1 - p = \frac{9}{10}$
$\begin{matrix} p (x \geq 1) = 1 - p (x = 1) \\ = 1 - {(\frac{9}{10})}^{n} \\ \geq \frac{1}{4} \\ i t i m p l i e s {(0.9)}^{n} \leq \frac{3}{4} \\ T h e p o s s i b l e v a l u e o f n i s = 3 \end{matrix}$

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App