Question
In a binomial distribution, if n = 20 and q = 0.75, then write its mean.
✓
Answer
$\text{n}=20,\text{q}=0.75$
$\Rightarrow\text{p}=1-\text{q}=0.25$
$\text{Mean = np}=20(0.25)=5$
Thus, $\text{Mean = 5}$
$\Rightarrow\text{p}=1-\text{q}=0.25$
$\text{Mean = np}=20(0.25)=5$
Thus, $\text{Mean = 5}$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Find the value of the determinant $\begin{vmatrix}4200&1201\\4205&4203\end{vmatrix}$
→Find the area of the region bounded by the curve $y=\sin x$, the line $x=-\frac{\pi}{2}, x=\frac{\pi}{2}$ and $X$-axis.
→Find the condition that the line $4x + 5y = 0$ coincides with one of the lines given by $ax^2 + 2hxy + by^2 = 0$
→Solve the following differential equations.
→$y^3-\frac{d y}{d x}=x^2 \frac{d y}{d x}$
Diffrentiate the following w.r.t.x
→$\sin \sqrt{\sin \sqrt{x}}$
Evaluate the following determinant:
$\begin{vmatrix}1&3&5\\2&6&10\\31&11&38\end{vmatrix}$
→$\begin{vmatrix}1&3&5\\2&6&10\\31&11&38\end{vmatrix}$
Evaluate the following definite integrals:$\int_{0}^\limits{\frac{\pi}{2}}(\sin\text{x}+\cos\text{x})\text{dx}$
→Represent the following switching circuit in symbolic form and construct its switching table. Write your conclusion from the switching table.
Find the Cartesian equations of the line passing through $A(2,2,1)$ and $B(1,3,0)$.
→Find the area bounded by the curve $y^2=4 a x$ about $X$-axis and the lines $x=0$ and $x=a$.
→