If triangle abc is dilated by a scale factor of 2 with a center of dilation at vertex c, how does the perimeter of a'b'c' compare with the perimeter of abc? a) the perimeter of a'b'c' is 2 times the perimeter of abc. b) the perimeter of a'b'c' is 4 times the perimeter of abc. c) the perimeter of a'b'c' is 6 times the perimeter of abc. d) the perimeter of a'b'c' is 8 times the perimeter of abc.

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).