Is there sufficient evidence to refute this claim

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When planning for a new forest road to be used for tree harvesting, planners must select the location to minimize tractor skidding distance. The skiding distances ( in meters) were measured at 20 randomly selected road sites. The sample results were x= 357.5, s= 117.29. Logger working on the road claims the skidding distance is at least 400 meters. Is there sufficient evidence to refute this claim?

Reference no: EM13202269

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