Answer Happy

A history instructor believes her current class' final gradesare higher than the course norm. The current class has 27students with an average grade of 71.5 and a variance of 42.25. The class average for the past 19 years is 78.6. Whatcan be concluded with an 𝛼 of 0.10?a) What is the appropriate teststatistic? ---Select--- na z-test One-Samplet-test Independent-Samples t-test Related-Samplest-test One-Way ANOVA Within-Subjects ANOVA Two-WayANOVA Correlation Slope Chi-SquareGoF Chi-Square Independenceb)Population: ---Select--- grades history class 19years past classes current classSample: ---Select--- grades history class 19years past classes current classc) Obtain/compute the appropriate values tomake a decision about H0.Critical Value = ; Test Statistic = Decision: ---Select--- Reject H0 Fail toreject H0d) If appropriate, compute the CI. If notappropriate, input "na" for both spaces below.[ , ]e) Compute the corresponding effect size(s)and indicate magnitude(s).If not appropriate, input and/or select "na" below.d = ; Magnitude: ---Select--- na trivialeffect small effect medium effect large effectr2 = ; Magnitude: ---Select--- na trivialeffect small effect medium effect large effectf) Make an interpretation based on theresults.
The current class' final grade is significantly higher than theclass average.The current class' final grade is significantly lowerthan the class average. The current class'final grade is not significantly different than the classaverage.