Exam 1 FALL 2011 VERSION A Solutions

You have collected monthly job openings posted by

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24. You have collected monthly job openings posted by Career Builder in Texas  for Analysts positions.   You would use the model__________ and hope your I  value would be______________. A. (TR)(S)(C)(I), zero B. (TR)(S)(C)(I), very near 1.0* C. (TR)(C)(I), very near 1.0 D. (TR)(S)(C)(I), >25 25. You have collected two samples: Sample A and Sample B, each with an  n=120.   Sample A has a mean of 7,580 and a standard deviation of 1,200.  Sample B has a mean of 19,520 and a standard deviation of 8,440. Comparing  these two samples which has the lesser variability. Use CV. 26. You are analyzing a financial stock’s price behavior over the past 12 months  and have collected data points twice a month (15 th  of the month and last day of  the month – or the closest days the market was open).  You have the following  data: Mean = $27.30 n = 24 CV = 23.12 Z score for $35 = 1.22  What is the standard deviation for these stock data you are analyzing?
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