A group of researchers wants to estimate the true mean skidding distance along a new road in a certain forest. The skidding distances​ (in meters) were measured at 20 randomly selected road sites. These values are given in the accompanying table. Complete parts a through d.   490 349 457 195 285 410 575 438 549 381   298 431 185 260 270 404 312 310 142 451 Estimate the true mean skidding distance for the road with a 99​% confidence interval.   (______,_______) ​(Round to one decimal place as​ needed.

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A group of researchers wants to estimate the true mean skidding distance along a new road in a certain forest. The skidding distances​ (in meters) were measured at
20
randomly selected road sites. These values are given in the accompanying table. Complete parts a through d.
 
490
349
457
195
285
410
575
438
549
381
 
298
431
185
260
270
404
312
310
142
451
Estimate the true mean skidding distance for the road with a
99​%
confidence interval.
 
(______,_______)
​(Round to one decimal place as​ needed.

 

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