田 [+ iii ave Answer ulatory and Supervisory Bureau (RSB) standards require that the amount of lead in drinking water be less than 10 pg/L. Eigtheen samples of water from a particular source yielded a an lead content of 9.85 ug/L and a standard deviation of 0.4 ug/L. Assume that the amount of lead in drinking water is normally distributed. At 5% significance level, can you clude that the water from this source meets the RSB standard? State the hypotheses, compute the test statistic (Round to two decimal places), find the p-value (Round to three imal places) and state the conclusion. the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). I U S Paragraph Arial 14px ... 5 2E E : = E E RBC |

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