Question

Can you please help me answer the second question that has the cutoff values..

Answer 1

We know that

• The mean is 0.

,

• The standard deviation is 1.00.

The cutoff value at +2.7% is found by adding the standard deviation three times to the mean.

The cutoff value at -2.7% is found by subtracting the standard deviation three times with the mean.

`\begin{gathered} 0+3\cdot1.00=3.00 \\ 0-3\cdot1.00=-3.00 \end{gathered}`

Therefore, the cutoff values are -3 degrees and 3 degrees, approximately.