Please answer all help

w BIOSTATISTICS (MTH-1210C), Spring 2022, P. Levin 7 . If a sample mean is within 95% confidence interval, we conclude that (choose from below): a. We can infer with _% significance level that the alternative hypothesis is true; b. We cannot infer with _% significance level that the alternative hypothesis is true; C. We can infer with _% significance level that the null hypothesis is true; d. We cannot infer with _% significance level that the null hypothesis is true; e . The test is statistically insignificant. 8 . Consider testing the hypothesis: Ho #250 VS. Ha#