The Weather Underground reported that the mean amount of summer rainfall for t...
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The Weather Underground reported that the mean amount of summerrainfall for the northeastern US is at least 11.52 inches. Ten cities in thenortheast are randomly selected and the mean rainfall amount is calculatedto be 7.42 inches with a standard deviation of 1.3 inches. At the α = 0:05level, can it be concluded that the mean rainfall was below the reportedaverage? What if α = 0:01 Assume the amount of summer rainfall follows a normal distribution.
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