State the null and alternative hypotheses

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Question: A lumber company is making boards that are 2960 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 26 boards is taken, and it is found that they have a mean of 2964.4 millimeters with a standard deviation of 12 . Assume the population is normally distributed. Is there evidence at the 0.05 level that the boards are too long and need to be trimmed? Step 1 of 6 : State the null and alternative hypotheses.

Reference no: EM133425585

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