o test He 50 versus H, w 60, a random sample of szen 22 is obtained tom a popula

Question

o test He 50 versus H, w 60, a random sample of szen 22 is obtained tom a population that is knownto be normaly distributed Complete pats (a) through below. Ho m Clid hereto view thetoistrbuton Avea in Rot Tail 576 ands 126 compute test statistic. Round to three decimal paces as needed) (blitthe researcher decides to test hypothesis at the a 0 the oncalvalue(s) Athough technology or atdstibuton table can be used to oncalvalue poolemuse the Mdslibution tabie cmca value. (Round to three deomal places Use a comma to separate answers as needed) (d the researcher reed the nul hypohess? O A Yes, because test stasesc does not neve ancaregon Yes, because the test stansactds inthe abca region O C. Na bocause the test statistic does nut fal infie erscal fegon D. No, because me test stnstc inthe crncal region

Explanation / Answer

a) here std error =std deviation/(n)1/2 =2.686

hence test stat t=(X-mean)/std error =(57.6-60)/2.686=-0.8934

b)critical value =-1.323

c)option B is correct

d)option C , No because the test stat does not fall in the critical region.

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