Given two dependent random samples with the following results:

Given two dependent random samples with the following results:

Population 1: 56   66   69   66   60   59   56    54

Population 2: 65   64   74   64   63   64   54     60

Can it be concluded, from this data, that there is a significant difference between the two population means? 

Let d=(Population 1 entry)−(Population 2 entry)d=(Population 1 entry)−(Population 2 entry).  Use a significance level of α=0.02 for the test.  Assume that both populations are normally distributed.

 

Step 2 of 5 : 

Find the value of the standard deviation of the paired differences. Round your answer to one decimal place.