The math teacher asked edith, “how old are you? ” “sixty years less than five times my brother’s age,” she answered. “that doesn’t me,” replied the teacher. “yes, it does,” said edith, “he and i are twins! ” how old is edith?

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).