Transcription of AP Statistics Final Examination Multiple-Choice Questions ...
1 AP Statistics Final ExaminationMultiple- choice Questions Answers in BoldNameDatePeriodAnswer Sheet: Multiple-Choice Decriptive Statisticsx= xinsx= 1n 1 (x1 x)2sp= (n1 1)s21+ (n2 1)s22(n1 1) + (n2 1) y=b0+b1xb1= (x1 x)(yi y) (sx x)2b0=y b1xr=1n 1 (x1 xsx)(yi ysy)b1=rsysxsb1= (yi y)2n 2 (xi x)2II. ProbabilityP(A B) =P(A B)P(B)P(A|B) =P(A B)P(B)E(X) = X= xipiVar(X) = 2x= (xi X)2piIfXhas a binomial distribution with parametersnandp, then:P(X=k) =(nk)pk(1 p)n k X=np X= np(1 p) p=p p= p(1 p)nIfxis the mean of a random sample of sizenfrom an infinite population withmean and standard deviation , the: x= x= nIII. Inferential StatisticsStandardized test statistic:statistic parameterstandard deviation of statisticConfidence interval:statistic (critical value) (standard deviation of statistic)Single-SampleStatisticStandard Deviationof StatisticSample Mean nSample Proportion p(1 p)nTwo-SampleStatisticStandard Deviationof StatisticDifference ofsample means 21n1+ 22n2 Special case when 1= 2 1n1+1n2 Difference ofsample proportions p1(1 p1)n1+p2(1 p2)n2 Special case whenp1=p2=p p(1 p) 1n1+1n2 Chi square test statistic = (observed = expected)2expectedTable.
2 Normal probabilitiesTable entry for is thearea under the standardnormal curve left of .zzTable entryzAppendix.
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