Hypotheses for a statistical test are given, followed by several possible confidence intervals for different samples. In each case, use the confidence interval to state a conclusion of the test for that sample and give the significance level used. Hypotheses: H0 : = 15 vs Ha : = 15 (a) 95% confidence interval for : 13.9 to 16.2 (b) 95% confidence interval for : 12.7 to 14.8 (c) 90% confidence interval for : 13.5 to 16.5