IS. 2 To complete the two-column proof below, reason for $3 is: and reason #4 must be by Postulate. Given : ACET BC DC Prove: A ABC AEDC 0 STATEMENT REASON 1.Given 1. AC EC 2. BC Fc 2. Given 3.​

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).