Beth solved the system of equations by making a substitution for y in the second equation. what equation did she get as a result of that substitution? y = 4x – 11 3x + 5y = –9 12x – 11 = –9 12x – 55 = –9 3x + 20x – 55 = –9 3x + 20x – 11 = –9

Atextile fiber manufacturer is investigating a new drapery yarn, which the company claims has a mean thread elongation of 12 kilograms with a standard deviation of 0.5 kilograms. the company wishes to test the hypothesis upper h subscript 0 baseline colon mu equals 12 against upper h subscript 1 baseline colon mu less-than 12 using a random sample of n equals 4 specimens. calculate the p-value if the observed statistic is x overbar equals 11.8. round your final answer to five decimal places (e.g. 98.76543).