A new machine was purchased to can tuna. With the old machine, a random sample of 16
Question:
A new machine was purchased to can tuna. With the old machine, a random sample of 16 cans revealed an average weight of 6.83 oz and a standard deviation of 0.64 oz. In an independent random sample with the new machine, the average weight was 6.24 oz, with a standard deviation of 0.75 oz.
a) Test whether the old machine has higher mean weight at α = 0.025, assuming the unknown population variances are not equal. Interpret decision about null.
b) Test whether the old machine has higher mean weight at α = 0.025, assuming the unknown population variances are equal. Interpret decision about the null.
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To test whether the old machine has a higher mean weight compared to the new machine well conduct two separate hypothesis tests using independent samp...View the full answer
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Related Book For 
Principles Of Managerial Statistics And Data Science
ISBN: 9781119486411
1st Edition
Authors: Roberto Rivera
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