Question: An experimenter randomly selects n = 16 batteries from a production line and measures their voltages. An average x- = 239.13 is obtained, with a

An experimenter randomly selects n = 16 batteries from a production line and measures their voltages. An average x- = 239.13 is obtained, with a sample standard deviation s = 2.80. Does this experiment provide sufficient evidence for the experimenter to conclude that the average voltage of the batteries from the production line is at least 238.5?

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