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A lumber company is making boards that are 2696 millimeters tall. If the boards are too...

A lumber company is making boards that are 2696

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 49boards is taken, and it is found that they have a mean of 2699.1millimeters. Assume a population variance of 225. Is there evidence at the 0.1

level that the boards are too long and need to be trimmed?

Step 1 of 6 :

State the null and alternative hypotheses.

Math   Statistics-And-Probability   
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