A sample of 14 bers was tested. Their strengths had a
Chapter 8, Problem 8.6.17(choose chapter or problem)
A sample of 14 bers was tested. Their strengths had a sample average of 266.5 and a sample standard deviation of 18.6. Use a hypothesis test to assess whether it is safe to conclude that the average strength of bers of this type is at least 260.0.
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