Question

very confused doing exercises practicing for GED 61-year-old woman please help any help step by step how to do this I greatly appreciate your time

Answer 1

First we have 5% as

`5\%=(5)/(100)=0.05`

Now we will use the Zscore calculator to get the Zscore for 0.05, written as P(x>Z) = 0.05, doing this we have Z = 1.645

Now from the question, we have

`\mu=50,\sigma=10`

Plugging these values into the formula given we have

`\begin{gathered} X=\mu+Z\sigma \\ X=50+1.645*10 \\ X=50+16.45 \\ X=66.45 \end{gathered}`

Hence the lowest score is 66.45