Answer Happy

A mixture of pulverized fuel ash and Portland cement to be used for grouting should have a compressive strength of more than 1,300 KN/m2. 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 o = 63. Let u denote the true average compressive strength.
If X = 1,340, find the P-value. (Round your answer to four decimal places.) = P-value =
State the mean and standard deviation (in KN/m2) of the test statistic. (Round your standard deviation to three decimal places.) KN/m2 KN/m2 mean standard deviation For a test with a = 0.01, what is the probability that the mixture will be judged unsatisfactory when in fact u = 1,350 (a type II error)? (Round your answer to four decimal places.) You may need to use the appropriate table in the Appendix of Tables to answer this question.