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A housing development can only build on a certain plot of land if can show that the average level of arsenic in the groundwater is
A housing development can only build on a certain plot of land if can show that the average level of arsenic in the groundwater is less than 76 parts-per-million (ppm). Soil samples are drawn from the site and tested in a lab. The results of the samples (in ppm) are given below. Is there enough evidence to say that the land is ready for development using a level of significance of 10%? You may assume that the level of ground arsenic is normally distributed in the area. Sample Reults: 56 11 98 58 29 86 50 21 58 a. Enter the null hypothesis for this test. Ho Select an answer ? v b. Enter the alternative hypothesis for this test. H1: Select an answer v ? v c. Is the original claim located in the null or alternative hypothesis? Select an answer v d. What is the test statistic for the given statistics? e. What is the p-value for this test? f. What is the decision based on the given statistics? Select an answer g. What is the correct interpretation of this decision? Using a % level of significance, there Select an answer | sufficient evidence to Select an answer v the claim that the average level of arsenic in the groundwater is less than 76 parts-per-million (ppm)
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