For a one-tailed test (lower tail) at 93.7% confidence, Z =
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solution:
93.7% confidence level the z is ,
= 1 - 93.7% = 1 - 0.937= 0.063
/ 2 = 0.063 / 2 = 0.0315
Z/2 = Z0.0315 = -1.86
For a one-tailed test (lower tail) at 93.7% confidence, Z = a) -1.86 b) -1.53 c)...
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