Mathematics, 14.04.2020 19:56 gabriellebarnes66
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 minutes.
At α = 0.05 can it be concluded that the average differs from the population average?
Report your answer to two decimal places.
Note: Find the test statistic ONLY to test this claim using an appropriate formula. You must show your work.
Answers: 2
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The average local cell phone call length was reported to be 2.27 minutes. A random sample of 20 phon...
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