Question 878246
M1 vs M2   nonsignificant
M1 vs M3   nonsignificant
M1 vs M4   nonsignificant
M2 vs M3   nonsignificant
M2 vs M4   P<.05
M3 vs M4   nonsignificant         
M2 vs M4: {{{t =(14-10)/sqrt(1/3+ 2/3) = 4}}} 
p-value = 2*P(t> 4 when df = 4) = 2*tcdf(4,100,4) = 0.02
.02 < .05
and for example
M1 vs M2: {{{t =(10.6667 - 10)/sqrt(1.1547/3+ 2/3)= .65}}}
p-value = 2*P(t> .65 when df = 4) = 2*tcdf(.65,100,4) = 2*.28