Question

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.

488	347	459	199	289	407	570	436	545	385
298	430	182	261	275	400	311	312	142	422

a.

Estimate the true mean skidding distance for the road with a 90​% confidence interval.

left parenthesis nothing comma nothing right parenthesis,

​(Round to one decimal place as​ needed.)

Answer 1

90% confidence interval is ( 312.7 , 403.1 )

Hope this will help you. Thank you :)