8.21. It is believed that if you purchase an air ticket at least three months in advance, price is cheaper compared to the price if
8.21. It is believed that if you purchase an air ticket at least three months in advance, price is cheaper compared to the price if you purchase it a few days before the trip. To test this claim, a random sample of 40 passengers who booked their air ticket three months before the trip (group 1] and a random sample of 50 passengers who booked their air ticket a few days before the trip [group 2) are selected. Here, we consider the same airline and the same destination. The average ticket price for group 1 is $295.89 with a standard deviation of $4816. The average air ticket price for group 2 is $304.76 with a standard deviation of $59.05. Conduct a hypothesis test at 5% level of significance to determine if air tickets are cheaper if you purchase them at least 3 months in advance compared to a few days before the trip
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