a)P(X<4)=1-e-x/ =1-e-4/6 =0.4866
b)pth percentile =-ln(1-p)
hence 75th percentile =-6*ln(1-0.75)=8.318 minute
c)expected number of patients in 30 minutes=30/6=5
hence from Poisson distribution ; more than 6 patients arrive during a half-hour period= P(X>6)=1-P(X<=6)
=1- =1-0.7622 =0.2378
At an urgent care facility, patients arrive at an average rate of one patient every 6...
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