A lumber company is making boards that are 2701.02701.0 millimeters tall. If the boards are too long they must be trimmed, and if they are too short they cannot be used. A sample of 2222 boards is made, and it is found that they have a mean of 2703.92703.9 millimeters with a variance of 100.00100.00. Is there evidence at the 0.10.1 level that the boards are either too long or too short? Assume the population distribution is approximately normal. Is there sufficient evidence to support the claim that the boards are either too long or too short?
A lumber company is making boards that are 2701.02701.0 millimeters tall. If the boards are too long they must be trimmed, and if they are too short they cannot be used. A sample of 2222 boards is made, and it is found that they have a mean of 2703.92703.9 millimeters with a variance of 100.00100.00. Is there evidence at the 0.10.1 level that the boards are either too long or too short? Assume the population distribution is approximately normal. Is there sufficient evidence to support the claim that the boards are either too long or too short?
Chapter1: Making Economics Decisions
Section: Chapter Questions
Problem 1QTC
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A lumber company is making boards that are 2701.02701.0 millimeters tall. If the boards are too long they must be trimmed, and if they are too short they cannot be used. A sample of 2222 boards is made, and it is found that they have a mean of 2703.92703.9 millimeters with a variance of 100.00100.00. Is there evidence at the 0.10.1 level that the boards are either too long or too short? Assume the population distribution is approximately normal. Is there sufficient evidence to support the claim that the boards are either too long or too short?
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