(a) Explain briefly and in nontechnical language what a significant difference (P lt; 0.01) means. (b) Explain clearly and briefly what...

(a) Explain briefly and in nontechnical language what "a significant difference (P < 0.01)" means. (b) Explain clearly and briefly what "95% confidence" means. (c) Is this study good evidence that requiring job training of all welfare mothers would greatly reduce the percent who remain on welfare for several years?