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Old 04-27-2008, 07:54 PM
J T J T is offline
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The mean arrival rate of flights at O’Hare Airport in marginal weather is

195 flights per hour with? The mean arrival rate of flights at O’Hare Airport in marginal weather is 195 flights per hour with
a historical standard deviation of 13 flights. To increase arrivals, a new air traffic control procedure
is implemented. In the next 30 days of marginal weather the mean arrival rate is 200 flights per
hour. (a) Set up a right-tailed decision rule at ?=.025 to decide whether there has been a significant
increase in the mean number of arrivals per hour. (b) Carry out the test and make the decision. Is it
close?Would the decision be different if you used ? = .01? (c) What assumptions are you making,
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