TST: stats.studentized_range: fix incorrect test
TST: stats.studentized_range: fix incorrect test

ilayn/scipy,ilayn/scipy,scipy/scipy,scipy/scipy,scipy/scipy,endolith/scipy,WarrenWeckesser/scipy,ilayn/scipy,scipy/scipy,Stefan-Endres/scipy,endolith/scipy,andyfaff/scipy,andyfaff/scipy,WarrenWeckesser/scipy,mdhaber/scipy,WarrenWeckesser/scipy,endolith/scipy,anntzer/scipy,scipy/scipy,anntzer/scipy,andyfaff/scipy,endolith/scipy,ilayn/scipy,WarrenWeckesser/scipy,mdhaber/scipy,Stefan-Endres/scipy,andyfaff/scipy,mdhaber/scipy,scipy/scipy,endolith/scipy,Stefan-Endres/scipy,ilayn/scipy,anntzer/scipy,mdhaber/scipy,WarrenWeckesser/scipy,endolith/scipy,mdhaber/scipy,Stefan-Endres/scipy,ilayn/scipy,anntzer/scipy,mdhaber/scipy,WarrenWeckesser/scipy,andyfaff/scipy,anntzer/scipy,anntzer/scipy,andyfaff/scipy,Stefan-Endres/scipy,Stefan-Endres/scipy