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1) The shelf life of a carbonated beverage is of interest. Ten bottles are randomly selected and tested, and the following results are obtained: Days 128 138 131 133 120 119 126 124 125 139 (a) We would like to demonstrate that the mean shelf life exceeds 120 days Set up appropriate hypotheses for investigating this claim. Test these hypotheses using a 0.01. i) State the hypotheses. li) What is the test statistic? ii) What are the assumptions? iv) What is the p-value for the test? v) What is the decisions? vi) Make Conclusions. (b) Construct a 99 percent confidence interval on the mean shelf life.
math   Statistics-And-Probability   
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