The Use Of Preservatives By Food Processors Has Become A Controversial Issue Suppose Two Preservatives Are Extensively 1 (49.54 KiB) Viewed 38 times
The Use Of Preservatives By Food Processors Has Become A Controversial Issue Suppose Two Preservatives Are Extensively 2 (36.32 KiB) Viewed 38 times
The use of preservatives by food processors has become a controversial Issue. Suppose two preservatives are extensively tested and determined safe for use in meats. A processor wants to compare the preservatives for their effects on retarding spollage. Suppose 15 cuts of fresh meat are treated with preservative I and 16 are treated with preservative II, and the number of hours until spoilage begins is recorded for each of the 31 cuts of meat. The results are summarized in the table below. Preservative x-ban = 106.4 hours S₁-10.3 hours Preservative II x-bar-96.54 hours S = 13.4 hours Referring to Table 3, state the null and alternative hypotheses for testing if the population variances differ for preservatives and 11. A HO: 0-0 20 versus H1: 02-0₁² <0 BHO: 0-0 ≤0 versus H1: 0²-0₁² >0 CHO: a-a²0 versus H1: 0²-0₁²0 I HO: aa0 versus H1: 0-0 =0 Question 15 Referring to Table 3, what is the value of the test statistic for testing if the population variances differ for preservatives I and 11? Add your answer 1.5 Points Question 16 1.5 Points Referring to Table 3, what is the critical value for testing if the population variances differ for preservatives I and II at the 5% level of significance? Add your answer
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