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A group of researchers wants to estimate the true mean skidding dstance along a new road in a certain forest. The skidding distances (in meters) were measured at 20 randomly selected values are given in the accompanying table. Complete parts a through d 487 299 348 455 195 288 575 435 548 433180261 274 401314315142 85 423 a Estmate the true mean skidding distance for the road win a 90% cofdence i terval, (Round to one decimal place as needed)
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-TA 111 men n skidding dis tone.=ろ58.65m standasd deviab A C 353.65-t-G、0-1. За с

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