mall Sample Mean Problem. The maker of potato chips uses an automated ackaging machine to pack its 20-ounce bag of chips. At the end of every shift 18 ags are selected at random and tested to see if the equipment needs to be adjusted. After one shift, a sample of 18 bags yielded the following data. mean 20.45 s.80 n = 18. we were to conduct a test to see if the sample estimate is different from the ompany's expected weight of 20 oz. at an alpha level = .05, what is (are) the itical t-value(s) for this test? O -1.96 and 1.96 O -2.110 and 2.131 O -2.110 and 2.110 O2.110

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Small Sample Mean Problem. The maker of potato chips uses an automated
packaging machine to pack its 20-ounce bag of chips. At the end of every shift 18
bags are selected at random and tested to see if the equipment needs to be
readjusted. After one shift, a sample of 18 bags yielded the following data. mean
= 20.45 s = .80 n = 18.
If we were to conduct a test to see if the sample estimate is different from the
company's expected weight of 20 oz. at an alpha level = .05, what is (are) the
critical t-value(s) for this test?
-1.96 and 1.96
-2.110 and 2.131
-2.110 and 2.110
2.110
Transcribed Image Text:Small Sample Mean Problem. The maker of potato chips uses an automated packaging machine to pack its 20-ounce bag of chips. At the end of every shift 18 bags are selected at random and tested to see if the equipment needs to be readjusted. After one shift, a sample of 18 bags yielded the following data. mean = 20.45 s = .80 n = 18. If we were to conduct a test to see if the sample estimate is different from the company's expected weight of 20 oz. at an alpha level = .05, what is (are) the critical t-value(s) for this test? -1.96 and 1.96 -2.110 and 2.131 -2.110 and 2.110 2.110
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