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10.92 Orange Juice A comparison of the precisions of two machines developed for extracting juice from oranges...

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10.92 Orange Juice A comparison of the precisions of two machines developed for extracting juice from oranges is to be made using the following data:

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a. Is there sufficient evidence to indicate that there is a difference in the precision of the two machines at the 5% level of significance?

b. Find a 95% confidence interval for the ratio of the two population variances. Does this interval confirm your conclusion from part a? Explain.

Transcribed Image Text:

Machine A s = 49.9 g n=25 Machine B s = 33.5 g n=25

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