Question: . Question 1 0/3 pts 9 10 = 4 0 Details Find the critical values X_ and Xu for the given level of confidence and

. Question 1 0/3 pts 9 10 = 4 0 Details Find the critical values X_ and Xu for the given level of confidence and sample size. Use three decimal places. Hint: If you get the wrong answer, try switching your answers around. a) 90% confidence, n=20; xi= XU= b) 99% confidence, n=14; XU= c) 95% confidence, n=25; XI= Xu= Question Help: Message instructor Submit Question Question 2 0/2 pts 9 10 4 0 Details A random sample of 20 is drawn from a population that is known to be normally distributed. The sample standard deviation s, is determined to be 3.55. Construct a 90% confidence interval for o. Report two decimal places. Confidence interval for o: Question Help: Message instructor Submit

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