Suppose that 14 children, who were learning to ride two-wheel bikes, were surveyed to determine how long they had to use trainin
g wheels. It was revealed that they used them an average of six months with a sample standard deviation of three months. Assume that the underlying population distribution is normal.
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Geometric mean is the square root of the product of the two numbers:
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The "cylinder" has a diameter of 6, and therefore its radius is half that, or 3, thus
