Question #178641

The following data represent the number of hours that a rechargeable battery operates before a recharge is required: 1.5, 2.2, 0.9, 1.3, 2.0, 1.6, 1.8, 1.5, 2.0, 1.2, 1.7. Use the sign test to test the hypothesis at 0.05 level of significance that the battery operates with an average of 1.8 hours before requiring a recharge. State clearly your assumptions.

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