In a two-tailed hypothesis about a population mean with a sample size of 100 and alpha = 0.10, the rejection region would be _________ .
Select one:
a. z > 1.28
b. z < -2.33 and z > 2.33
c. z < -1.64 and z > 1.64
d. z > 1.64
e. z < -1.28 and z > 1.28
我认为是c，对吗，因为是两边的，多亿alpha要除以2，得到0.05，再看表。[s:16][s:16]
