Hello, i tried understanding B, thank you for help and helping me understanding this

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I already report it and made it known to the customer service. As a student I need help understanding this homework practice assignment so i can collaborate and learn. This is what the site is for. to help learn . thank you.

Suppose approximately 80% of all marketing personnel are extroverts, whereas about 55% of all computer programmers are introverts. (For each answer, enter a number. Round your answers to three decimal places.) (a) At a meeting of 15 marketing personnel, what is the probability that 10 or more are extroverts? 0,939 What is the probability that 5 or more are extroverts? 0.999 What is the probability that all are extroverls? 0.035 (b) In a group of 5 computer programmers, what is the probability that none are introverts? 0,015 x What is the probability that 3 or more are introverts? 0.814 x What is the probability that all are introverts? 055 x