Question: please give the answer in correct way show the working how they get answer step by step please because i do not understand this question

please give the answer in correct way show the working how they get answer step by step please because i do not understand this question show working all thank you so much please answer all thank you again please tell me what chapter is this tq

Suppose that history shows that 60% of college students prefer Brand C cola. A sample of 5 students is to be selected. i. Find the probability that exactly 4 prefer brand C. (1 marks) ii. Find the probability that 2 or fewer prefer brand C. (4 marks) iii. Find the probability that at least 1 prefers brand C is (3 marks) iv. Calculate the mean and variance number that you would expect to prefer brand C. (2 marks)

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