Answer
(a) $n=14$, $n_1=6$, $n_2=8$ and $r=6$
(b) $lower~critical~value=3$
$upper~critical~value=12$
(c) $lower~critical~value\lt r\lt upper~critical~value$: null hypothesis is not rejected.
Work Step by Step
(a) $n=14$, $n_1=6$, $n_2=8$ and $r=6$
(b) $lower~critical~value=3$
$upper~critical~value=12$
(According to table X, for $n_1=6$, $n_2=8$)
(c) Small sample case:
Test statistic: $r=8$
Since $lower~critical~value\lt r\lt upper~critical~value$, we do not reject the null hypothesis.
