12-3. Adistributor of a particular brand of industrial heat lamps states that their average draw of current

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12-3. Adistributor of a particular brand of industrial heat lamps states that their average draw of current is 0.9 amps. A sample of n = 12 lamps was tested and it was determined that ¯x = 0.13 with s = 0.41. For α = 0.05, should we reject the distributors claim?

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