It is known that 80% of people donating blood have a particular type of protein. Five people are randomly selected.
1 What is the probability that at least one person does not have the type of protein?
2 What is the probability that at most four have the type of protein?
3 What is the smallest number of people who must be selected if we want to be at least 90% certain that we obtain at least five people with the type of protein?
4 Verify your answers to 1, 2 and 3 using MATLAB. Include your MATLAB code and output.
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