Mathematics, 15.11.2019 20:31, jdilla98

The average local cell phone call length was reported to be 2.27 minutes. a random sample of 20 phone calls showed an average of 2.98 minutes in length with a standard deviation of 0.98 minute. at α=0.05, can it be concluded that the average differs from the population average?

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The average local cell phone call length was reported to be 2.27 minutes. a random sample of 20 phon...