Question: 14.3 With reference to Exercise 2.12, which pertained to the particle size of cement dust in a factory producing cement, use the sign test at

14.3 With reference to Exercise 2.12, which pertained to the particle size of cement dust in a factory producing cement, use the sign test at the 0.05 level of significance to test the null hypothesis μ = 15.13 hundredth of a micron against the alternative hypothesis μ < 15.13 hundredth of a micron.

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