Given two independent random samples with the following results: xi = 80-2 = 99 s2

use this data to find the 90 % confidence interval for the true difference between the population means.

assume that the population variances are equal and that the two populations are normally distributed.

step 1 of 3: find the critical value that should be used in constructing the confidence interval. round your answer to three decimal places.

step 2 of 3: find the standard error of the sampling distribution to be used in constructing the confidence interval. round your answer to the nearest whole number.

step 3 of 3: construct the 90% confidence interval. round your answers to the nearest whole number.