Answer:
Probability= 0.199995904
Step-by-step explanation:
Probabilty of defective p = 0.2
Probability of non defective q = 1-0.2
= 0.8
Probability that 2 or more will be defective out of ten = probability of all defective - probability of 1 non defective
Probability of1 non defective
= 10C1(0.8)¹(0.2)^9
= 10*0.8*5.12*10^-7
= 4.096*10^-6
= 0.000004096
Probability of two or more defective
= 0.2-0.000004096
= 0.199995904
