A random sample of 12 chemists from Washington stats shows an average salary of $39,420 with a standard deviation of $1659. A random sample of 26 chemists from New Mexico has an average salary of $30,215 with a standard deviation of $4116. Find the 98% confidence interval of the difference of means. Please select the three main reasons mentioned in the problem that helped determine the correct formula. The problem asks us to find (estimate) the confidence interval of the difference of proportions (p - p). The problem asks us to find (estimate) the confidence interval of the difference of means ( - ). The problem asks us to find (estimate) the confidence interval of population (true) mean (). The problem asks us to find (estimate) the confidence interval of the population (true) proportion (p). Asks us to find the sample size (how large or how many) The problem provides information on two samples. The problem provides information on one sample. The sample standard deviations are given or need to be calculated The population standard deviations are given