2 Find the critical values x and x² for the given level of XL 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; xv= 2 x²z= b) 99% confidence, n=14; 2 XU= XL 3.5X c) 95% confidence, n=25; 2 X= 29. X XL x=|29.x

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