Question 1195264
probability 0 batteries do not meet is .98^57=0.3161
probability 1 won't is 57*0.02*.98^56=0.3678
probability 2 won't is 57C2*0.02^2*0.98^55=0.2101
that sum is 0.8940, so out of 4000 would expect 3576 to be accepted. One can decide whether will almost all or will many are the right terms to use.