Mathematics, 05.05.2020 04:17 alexi25jeep
A mixture of pulverized fuel ash and Portland cement to be used for grouting should have a compressive strength of more than 1300 KN/m^2. The mixture will not be used unless experimental evidence indicates conclusively that the strength specification has been met. Suppose compressive strength for specimens of this mixture is normally distributed with σ = 63. Let μ denote the true average compressive strength.
a. What are the appropriate null and alternative hypothesis?
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