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Consumer reports gave information about the ages at which various household products are replaced.

Consumer reports gave information about the ages at which various household products are replaced. For example, color TVs are replaced at an average age of years after purchase, and the ( of data) range was from 5 to 11 years. Let x be the age (in years) at which a color TV is replaced. Assume that x has a distribution that is approximately normal.

This question was asked on Jan 14, 2013.

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