find out the pooled variance for the given data.
Two independent samples were taken, their values were
31.3782

22.34339

22.00059

23.27456

19.58917

19.36148

18.69048

and
20.84991

14.47431

21.70867

20.95000

19.42273

22.40625

24.51507

21.81862

17.45048

19.09114

19.92904

27.34344

21.1876


The pooled variance of two samples is:
(a)14.388
(b)12.801
(c)12.68
(d)12.949
(f)14.285