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A group of researchers wants to estimate the true mean skidding distance along a new road...

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Statistics

A group of researchers wants to estimate the true mean skiddingdistance along a new road in a certain forest. The skiddingdistances​ (in meters) were measured at 20 randomly selected roadsites. These values are given in the accompanying table. Completeparts a through d.

488

347

454

196

286

408

571

438

546

385

300

432

184

263

272

402

311

315

140

426

a. Estimate the true mean skidding distance for the road with a99% confidence interval.

(_____,_______)​(Round to one decimal place as​ needed.)

b. Give a practical interpretation of the​ interval, part a.

The confidence interval means that we are ______% confident thatthe true

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