Given two dependent random samples with the following results:

Population 1: 34, 34, 34, 20, 27, 18, 41

Population 2: 48, 25, 40, 18, 24, 23, 27

Use this data to find the90% confidence interval for the true difference between the population means. Assume that both populations are normally distributed.

Step2of4:Calculate the sample standard deviation of the paired differences. Round your answer to six decimal places.