PStats_-_H3_-_GH - Homework PRINCIPLES OF STATISTICS 3...

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PRINCIPLES OF STATISTICS Spring 2008, Homework 3 Name 1: Name 2: Name 3: Name 4: Name 5: Instructions This homework consists of 5 questions.   You   must  provide interpretations of your  answers, not just calculations.  The homework is due on Thursday March 12 th  at 5:00  pm. Don’t forget to fill in your names on this page . Good luck. Homework 3
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1. Citibank recorded the number of customers to use a downtown ATM during  the noon hour on 32 consecutive workdays. 25 37 23 26 30 40 25 26 39 32 21 26 19 27 32 25 18 26 34 18 31 35 21 33 33 9 16 32 35 42 15 24 a. Use the Empirical Rule to determine the existence of outliers and  unusual values (hint: you will need to find the mean and std. deviation  as well as the percent of observations in each interval). b. Compare the percent of observations that lie within 1 and 2 std.  deviations of the mean with a normal distribution. Do the data seem to 
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PStats_-_H3_-_GH - Homework PRINCIPLES OF STATISTICS 3...

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