The formula for sample size in our study was: \(n = \frac{t^2 P(1-P)}{Z^2}\)
A: VECTORS AND MATRICES
- Vector:
\[\begin{matrix}
4 & 3 & 2 & 1
\end{matrix}\]
- Parenthes:
\[\begin{pmatrix}
4 & 3 & 2 & 1
\end{pmatrix}\]
- Brackets:
\[\begin{bmatrix}
4 & 3 & 2 & 1
\end{bmatrix}\]
- A 2 by 3 matrix:
\[\begin{bmatrix}
4 & 3 & 2 \\
5 & 4 & 1
\end{bmatrix}\]
- Using vdots:
\[\begin{bmatrix}
4 & 3 & 2 \\
\vdots & \vdots & \vdots \\
5 & 2 & 0
\end{bmatrix}\]
B: EQUATIONS
Simple simultaneous equation: \[\begin{equation}
y = 56x + 9 \\
y = 43x - 23
\end{equation}\]
An equation which contains parenthes
\[\begin{equation}
y =\left(\frac{2x}{7}\right) + 5
\end{equation}\]
- Solving an equation \[\begin{align}
y &= 2x + 8 \\
&= 2(2) + 8 \\
&= 12
\end{align}\]