pH is a measure of acidity that winemakers must watch. A "healthy wine" should have a pH in the range 3.1 to 3.7. The target standard deviation is σ = 0.10 (i.e., σ2 = 0.01). The pH measurements for a sample of 16 bottles of wine are shown below. At α = .05 in a two-tailed test, is the sample variance either too high or too low? Show all steps, including the hypotheses and critical values from Appendix E. Hint: Ignore the mean. (See www.winemakermag.com.)
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