8.For a one-tailed test (lower tail) at 93.7% confidence, Z =
a.-1.86
b.-1.53
c.-1.96
d.-1.645
9. For a one-tailed test (upper tail), a sample size of 18 at 95% confidence, t =
a.2.12
b.-2.12
c.-1.740
d.1.740
How do I actually figure these problems? I'm afraid I just dont understand, so any help would be greatly appreciated! Thanks!
a.-1.86
b.-1.53
c.-1.96
d.-1.645
9. For a one-tailed test (upper tail), a sample size of 18 at 95% confidence, t =
a.2.12
b.-2.12
c.-1.740
d.1.740
How do I actually figure these problems? I'm afraid I just dont understand, so any help would be greatly appreciated! Thanks!