help me please

A signicant number of Computer Science students say they need a workshop when it comes to used new software. 3% of them would feel comfortable learning the new software by themselves. while the others said that they need help to show them how to use the new software. i. Find the probability that from 2 to 4 will comfortably learning the new software by ti'iemselves. if 20 Computer Science students are selected at random. (3 marks) ii. Using the suitable approximation, nd the probability that at most 3 Computer Science students comfortable to use the new software by themselves if 150 students are randomly selected. (4 marks) On average. 12 programmers arrived randomly at Techno Company every hour on weekday morning. Calculate the probability that more than eight programmers will arrive in 25-minute interval on a weekday morning