The department of zoology at the Virginia Polytechnic Institute and State University carried out a study to determine if there is a significant difference in the density of organisms in two different stations located in Cedar Run, a secondary river that is located in the river basin. Roanoke. Drainage from a sewage treatment plant and overflow from the Federal Mogul Corporation sedimentation pond enter the flow near the source of the river. The following data give the density measurements, in numbers of organisms per square meter, at the two different collecting stations. Number of

The following data represent the volumes in cubic yards of the largest dams in the United States and in South America. United States South America 125,628 311,539 92,000 274,026 78,008 105,944 77,700 102.014 66,500 56.242 62,850 46,563 52,435 50,000 Source: New York Times Almanac. Send data to Excel Part: 0 / 3 Part 1 of 3 (a) Draw a boxplot of the data for the United States. Round your answers to the nearest thousand. 50000 100000 150000 200000 250000 300000 350000 400000

Weatherwise is a magazine published by the American Meteorological Society. One issue gives a rating system used to classify Nor'easter storms that frequently hit New England and can cause much damage near the ocean. A severe storm has an average peak wave height of u- 16.4 feet for waves hitting the shore. Suppose that a Nor'easter is in progress at the severe storm dass rating. Peak wave heights are usually measured from land (using binoculars) off foxed cement piers. Suppose that a reading of 36 waves showed an average wave height of x- 16.9 feet. Previous studies of severe storms indicate that - 3.5 feet. Does this information suggest that the storm is (perhaps temporarily) increasing above the severe rating? Use a - 0.01. (a) What is the level of significance? O State the null and alternate hypotheses. O H: - 16.4 ft; H,: > 16.4 ft O Ho H 16.4 t; H,: - 16.4 m (b) What sampling distribution will you use? Explain the rationale for your choice of sampling distribution. O The standard…

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