$$\text { Find the critical value } \mathrm { z } \alpha / 2 \text { that corresponds to a degree of confidence of } 91 \% \text {. }$$

Multiple Choice

$$\text { Find the critical value } \mathrm { z } \alpha / 2 \text { that corresponds to a degree of confidence of } 91 \% \text {. }$$

A) 1.75
B) 1.34
C) 1.645
D) 1.70