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DO NOT UPD QANT 201 Statistical Sampling Theory 5. Following 12 quarters, three

ID: 2925283 • Letter: D

Question

DO NOT UPD QANT 201 Statistical Sampling Theory 5. Following 12 quarters, three years, profit data for company X is presented Year Quarter Profit ($ 2007 2007 2007 2007 2008 2008 2008 2008 2009 2009 2009 2009 millions) 21.5 51.2 58.5 7.1 38.0 98.2 51.8 15.0 53.8 10.1 55.5 22.0 4 4 Construct a contingency display data using the Pivot table by excel 6. The following data shows the number of students that came to office hours per day to office hours per day for a faculity member 0 0 Construct a cumulative relative frequency distribution for this data and determine the probability that fewer than three students will come to office hours today.

Explanation / Answer

The cumulative relative frequency distribution will be:

From above table,

P(Fewer than three students will come to office hours) = 0.85

Values Frequency Relative Frequency Up to 0 18 18/40 = 0.45 Up to 1 28 28/40 = 0.70 Up to 2 34 34/40 = 0.85 Up to 3 38 38/40 = 0.95 Up to 4 40 40/40 = 1