Answer
Robert C. Byrd $z_{B}=2.30$
John Sununu $z_{S}=-1.70$
Work Step by Step
Given $\mu=59.5$ and $\sigma=11.5$
For Robert C. Byrd (D, WV), $z_{B}=\frac{86-59.5}{11.5}=2.30$
For John Sununu (R, NH), $z_{S}=\frac{40-59.5}{11.5}=-1.70$
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