A builder contracted for the delivery of 4 million pounds of loam. The supplier delivered the loam

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A builder contracted for the delivery of 4 million pounds of loam. The supplier delivered the loam in 1,000 truckloads that he claims average 4,000 pounds of loam.

The builder weighed a random sample of 16 truckloads and obtained these data:image text in transcribed

Using a one-tailed test, do these data reject the supplier’s claim at the 5 percent level?

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