Question 1138542
If this is 15% defective parts 
and one chooses 7 parts (not clear from what is written)
fewer than 3 means 2,1,0
for 0 it would be 0.85^7=0.3206
for 1 it would be 7C1*0.85^6*0.15=0.3960
for 2 it would be 7C2*0.85^5*0.15^2=0.2097
The sum is 0.9263