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What is the highest alpha value

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In 1995, the average two-week airfare on the flight between Puerto Rico and New York was $ 245. The population standard deviation was $ 68. In a 1996 survey of 90 randomly chosen travelers between these two cities, they found that they had paid, on average, $ 218.77 for their tickets. Did the average air fare change significantly on this route between 1995 and 1996? What is the highest alpha value for which you could conclude that the observed average rate is not significantly different from $ 235?

Reference no: EM132495784

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