Do one of the following, as appropriate: (a) Find the critical value
zα/2,
(b) find the critical value
tα/2,
(c) state that neither the normal nor the t distribution applies.
90%;
n=10;
σ
is unknown; population appears to be normally distributed.
A.
tα/2=1.833
B.
tα/2=1.812
C.
zα/2=1.383
D.
zα/2=2.262
zα/2,
(b) find the critical value
tα/2,
(c) state that neither the normal nor the t distribution applies.
90%;
n=10;
σ
is unknown; population appears to be normally distributed.
A.
tα/2=1.833
B.
tα/2=1.812
C.
zα/2=1.383
D.
zα/2=2.262
