(Answered) A salesman has 30 appointments this week the probability of

Statistics

A salesman has 30 appointments this week. The probability of making a successful sale is 0.58. What is the probability the salesman will make at least 18 sales for the week (Binomial distribution), exactly 19 sales, and less than 12 sales?

Exactly being zero?

Can you please show me how you came to conclusion?

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