13.8 random sampling from two normal populations produced the
13.8 Random sampling from two normal populations produced the following results:X-bar1 = 412 s1 = 128 n1 = 150X-bar2 = 405 s2 = 54 n2 = 150 a. Can we infer at the 5% significance level that μ1 is greater than μ2? b. Repeat part (a) decreasing the standard deviations to s1 = 31 and s2 = 16.c. Describe what happens when the sample […]