Question

Insert Design Layout References Mailings Review View Sha Styles Styles Pane 4.) In August 2013, radioactive water from the damaged Daiichi nuclear plant leaked into the Pacific ocean. The contaminated groundwater seeped through an underground barrier created and the Japanese Nuclear Regulatory Authority declared an emergency. In response, Tepco (the plant's operator) began pumping out more groundwater to ease the spill into the ocean. Concentrations of cesium-137 (in Bq/1) in the seawater 10-30 kilometers off the Japanese coast were taken at eight different locations one week apart, before and after the additional pumping. The data are given in the following table: Location August 23 i August 3016 16 12 14 18 12 12.5 10.5 15.5 11 16 14 85 6.5 Is there evidence to suggest that the population average cesium-137 level decreased from August 23 to August 30? Use a-0.05

Answer 1

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