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Assignment help 313

A teacher draws a line on the chalk board in the front of her classroom.  She asks each student to estimate the length in inches of the line.  She then collects the data and reports that the estimates range from 33 to 61 inches and the mean of the estimates is 42.25 inches.  She then measures the line she drew and it’s found to be 41.75 inches long.  Does this support the theory that “2 heads are better than 1”?  What statistical theory did you learn that supports this?  What could the teacher do to get the sample average (42.25 inches) closer to the actual average (41.75 inches)?

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