A random sample of size n = 13 obtained from a population that is normally distributed results in a sample mean of 44.1 and sample standard deviation 12.6. An independent sample of size n = 18 obtained from a population that is normally distributed results in a sample mean of 51.8 and sample standard deviation 15.4. Does this constitute sufficient evidence to conclude that the population means differ at the a = 0.10 level of significance? Click here to view the standard normal distribution table (page 1)_ Click here to view the standard normal distribution table (page 2)_ Click here to view the table of critical t-values. Click here to view the chi-square critical values table