9. What is the value of mean i based on Problem B? В. 1б0 A. 180 C. 4.23 D. cannot be determined What must be the value of the standard deviation o based on Problem B? А. 180 В. 160 C. 4.23 D. cannot be determined What can be concluded based on the results? A. The results are significant at o.01 level of significance B. The results are highly significant at o.o1 level of significance C. The results are not significant at the specified level of significance D. The results are not highly significant at the specified level of significance

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