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A food Processor wants to compare two preservatives for their effects on retarding spoilage. Suppose 16cuts of fresh meat are tread with preservatives A and 16 are treated with preservative B, and the number of hours until spoilage begins is recorded for each of the 32 cuts of meat. The result asa summarized as
Sample mean of Preservative A =108.7 hoursSample mean of Preservative B =98.7 hourSample Standerd Deviation A=10.5 hoursSample Standerd Deviation B=13.6 hour
a) State the null and alternative hypotheses to determine if the average number of hours until spoilage begins differs for the preservatives A and B?
b) Analyse sample variances in order to find which test would likely be most appropriate to employ to test the equality of the population means, pooled or unpooled?
c) Calculate the pooled variance and the value of the test statistic.
d) Determine the rejection at a=0.05 and write the proper conclusion about hypothesis testing."
PriceQuote: More than $23.
Determine if you would reject or fail to reject the null hypothesis in each of the following cases: (a) z=1.06 (b) z=2.06 (c) A z score beyond which 7% of the data fall in each tail.
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