The completion of a construction job may be delayed because of a strike. There is 65% chance of having a strike. The construction company thinks that there is 85% chance of completing the job on time if there is no strike, but there is only 35% chance of no delays (on time) if there is a strike. What is the chance of completing the construction job on time?

Daily sales of Tablet Computers over 30 Days
Number of tablets sold	Number of days
0	1
1	3
2	10
3	12
4	4
5 or more	0

1. What is the probability of selling at least one tablet on a given day?
2. Given that the store sells at least one tablet on a particular day, what is the probability of selling at most 3 on that day?
3. Are events A = "sell at most 3 tablets in a day" and B = "sell more than 3 tablets in a day" independent? Show mathematical work/explanation without simply providing yes or no answer.