Suppose approximately 75% of all marketing personnel are extroverts, whereas about 70% of all computer programmers are introverts. (For each answer, enter a number. Round your answers to three decimal places.)

---- At least 5 from marketing departments are extroverts

---- All from marketing departments are extroverts

---------- None from computer programmers are introverts

Step-by-step explanation:

See comment for complete question

The question is an illustration of binomial probability where

--- marketing personnel

--- proportion that are extroverts

Using the complement rule, we have:

So, we have:

So, we have:

Recall that:

--- approximated

--- marketing personnel

--- proportion that are extroverts

So, we have:

---------- computer programmers

--- proportion that are introverts

So, we have:

45

step-by-step explanation:

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