Needing help with question number 8.

10:28 M + webassign.net/web/Student/Assign 3 . . . Need Help? Read It Talk to a Tutor 8 . -/8.33 points BBBasicStat8Acc 6.2.023.MI. My Notes + Ask Your Teacher Suppose approximately 75% of all marketing personnel are extroverts, whereas about 50% 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? What is the probability that 5 or more are extroverts? What is the probability that all are extroverts? (b) In a group of 5 computer programmers, what is the probability that none are introverts? What is the probability that 3 or more are introverts? What is the probability that all are introverts? Need Help? Read It Talk to a Tutor 9. + 8.33/8.33 points | Previous Answers BBBasicStat8Acc 6.3.005. My Notes Ask Your Teacher Consider a binomial distribution of 200 trials with expected value 80 and standard deviation of about 6.9. Use the criterion that it is unusual to have data values more than 2.5 standard deviations above the mean or 2.5 standard deviations below the mean to answer the following questions. (a) Would it be unusual to have more than 120 successes out of 200 trials? Explain. .Yes. 120 is more than 2.5 standard deviations above the expected value. Yes. 120 is more than 2.5 standard deviations below the expected value. No. 120 is less than 2.5 standard deviations above the expected value. No. 120 is less than 2.5 standard deviations below the expected value. lt