Answer:
Probabilty of more than 3 =0.8474
Step-by-step explanation:
Probabilty of returned on time P= 0.39
Probabilty of not on time q=1-0.39= 0.61
Sample = 12 cars
Selected items = 3 cars
Probabilty of3 returned on time
= 12C3 * (0.39)^3 * (0.61)^9
= 220*(0.059319)*(0.011694146)
= 0.1526
Note**** C represents combination
So probability of more than 3 means greater than 3 = from 4 above
Probability of more than 3 = 1-probability of three
Probabilty of more than 3 = 1-0.1526
Probabilty of more than 3 =0.8474
