My Noies Ask Your consider a normal population distribution with the value ofo k

Question

My Noies Ask Your consider a normal population distribution with the value ofo known. (a) What is the confidence leval for the intarval- 2.8EO/Vn? (Round your answer to one daomi pace. (b what is the confidcnca leval for the interval x1 1.18o(Rcund your answer to one dacimal place. (c) what valuR at 7a2 in tha C1 tormula halnw rasuts in a contiderca l vel at 40,7%? (Raund your answer to two dacimal plac %) (z.zn .t" . "zaa . V.) 22.97 confidence level of 75%. (Round your answer to two decimal places. d Answer the question posed in part c) for az-1.15 You may need to use the ppropriate table in the Appendix of Tables to answer this question

Explanation / Answer

Solution:-

a) confidence interval is 99.80%

=> 1 - 0.001988 = 0.9980 = 99.8%

b) confidence interval is 93.1%

=> 1 - 1 - 0.069437 = 0.930563 = 93.1%

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