Answered

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

very confused doing exercises practicing for GED 61yearold woman please help any help step by step how to do this I greatly appreciate your time class=


Answer :

SOLUTION

First we have 5% as

[tex]5\%=\frac{5}{100}=0.05[/tex]

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

[tex]\mu=50,\sigma=10[/tex]

Plugging these values into the formula given we have

[tex]\begin{gathered} X=\mu+Z\sigma \\ X=50+1.645\times10 \\ X=50+16.45 \\ X=66.45 \end{gathered}[/tex]

Hence the lowest score is 66.45