Question

I am so confused how to solve this because of the (1) and the (2)

Answer 1

The formula required is:

`d=(M-\mu)/(\sigma)`

From the given values, it follows:

`\begin{gathered} d=(14-12)/(4) \\ d=(2)/(4) \\ d=0.5 \end{gathered}`

Therefore the required answer is d=0.5