Question

0.83 0.88 0.8 -06 .09 1.26 1.29 1.31 .29 1.49 159 .265 L7 1.76 1-83 Assume that the distribution of roating thickness is normal (a nermal probsbility plot strongly supports this assumptien). ,a) Calculate pont "atimate f th" mean value of co.ting thicknex..(Round your .nawer to four decimal places.) tte which timtor you u b) C-laulab. “ Rant u-tamat-af the m-dian of th-coating thicknwas diatribution. (Ruund your anan.·ta Four d smal plac-a.) Stste whith estimator you used and which estimator you might have used instesd. (Select s thst spply) State which atimator you uced 10th percentile 890th percentile d) Estimate P X 1 2 Le the proportion of a ekne?values es, than 1 2 Hinti You kne the values of ? snd ? you could calculate this probability. These ve e, are no tavola e out they can be estimated. Round Your answer to our deci place (e? what iz the estimated Standond error of the estin tor that you used in part (b)? (Round your onswer to four dec mal places.) 0828x You may need to use the appropriate table in the Appandix of Tabks to anwer the quasticn

Answer 1