Unformatted text preview: favorite brand. They conducted ten trials and obtained the following data (in ppm): 459, 430, 478, 501, 422, 456, 439, 471, 486, and 451. Determine whether the concentration of dissolved solids falls below the FDA requirement at the 95% conﬁdence level using a one-tailed t test. 1. State the null and alternative hypothesis: 2. Calculate t exp : t exp = _______________ 3. Determine t crit at 95% conﬁdence (using Appendix 1B. Note: Read the footnote carefully!). t crit = _______________ 4. Does the student’s mineral water pass the FDA requirement? Explain your answer. Cornell University Chemistry 3000 — Fall 2009 J. A. Marohn...
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- U.S. Food and Drug Administration, Total dissolved solids, Mon PM, one-tailed t test