Statistical Analysis and Probability Applications: A Comprehensive Study Guide

Study guide covering statistical analysis and probability concepts.

Andrew Taylor
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Statistical Analysis and Probability Applications: A ComprehensiveStudy GuideSTUDY GUIDE1.The following data represents the lengths of long distance phone calls (inminutes).161591768102414a)Find the range, sample mean, mode and median.Range: 24-1=23minSample mean:x=1+6+6+8+9+10+14+15+17+24/10=11 minMode=6minMedian 9+10=19/2=9.5 minCorrectb)Find the sample variance andstandard deviation.S^2= 394/10-1=394/9=43.77Standard Deviation S=43.77=6.62Population Standard Deviation4.39=6.28Correct2.Suppose it is known that verbal SAT scores have a bell-shaped distributionwith a mean of 500 and astandard deviation of 100.a)What percentage of verbal SAT scores are between 400 and 700?

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