Determine the critical value(s) for a left-tailed test of a population mean at the α=0.01 level of significance based on a sample size of n=10.

Quadrilateral efgh was dilated with the origin as the center of dilation to create quadrilateral e'f'g'h'. the quadrilateral was dilated using a scale factor of 2.5. the lengths of the sides of quadrilateral efgh are given. what is the length of side f'g'?