thanks You will perform a significance test of H0: mu = 0 versus Ha: mu> 0. What values of z would lead you to reject H0 at the 5% level? z 1.960. z le 1.960 and z 1.960. z le 1.645 and z 1.645. z 1.645. You will perform a significance test of Ho : mu =0 versus Ha : mu > 0. If the alternative hypothesis was Ha : mu 0, what values of z would lead you to reject H0 at the 5% level? z 1.960. z le - 1.960 and z 1.960. z le - 1.645 and z 1.645. z 1.645. Solution (1) D (2) B.