Need math help with Statistic Questions about student probabilities in a university
Exhibit 5: Thestudent body of a large university consists of 60% female students. A randomsample of 10 students is selected.13. Refer to Exhibit5. What is the probability that among the 10 students exactly two arefemale?a.0.0896b.0.2936c.0.0413d.0.010614. Refer to Exhibit5. What is the probability that among the 10 students at least 9 arefemale?a.0.1064b.0.0463c.0.0168d.0.8936Exhibit 6: Onaverage 6 cars arrive at a bank teller window in a ten minute time interval. Itcan be assumed that the probability of an arrival is the same in any timeperiods of equal length.15. Refer to Exhibit6. The probability that exactly 8 cars arrive in ten minutes isa.0.0241b.0.0771c.0.1126d.0.1033 16. Refer to Exhibit6. The probability that there are less than 3 car arrivals in ten minutesisa.0.0659b.0.0620c.0.1016d.0.1239Exhibit 7:The assembly time for a product is uniformlydistributed between 8 and 12 minutes.17. Refer to Exhibit 7. The probability that the time to assemble the productwill take between 11 and 13 minutes isa.0.50b.0.25c.0.75d.018. Refer to Exhibit7. The standard deviation of the assembly time is:a.1.1547 b.1.1547 minutesc.1.3333 d.1.3333 minutes
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