In March 2016, it was reported that key American brands had experienced a decrease in interactions with Instagram posts from 4.96 interactions at the end of 2014 to 3.10 interactions by the end of 2015. With consistent samples sizes of 2000 for December 2014 and also for December 2015, the sample standard deviations were 37 interactions for 2014 and 28 interactions in 2015. Julian Gottke, writing for Quaintly, seemed to indicate that the decrease from 4.96 interactions to 3.10 interactions was not a big deal. To test whether this change was statistically significant, a two-sample hypothesis test using the t statistic was ordered. At a level of significance of 0.05, was this decrease in interactions statistically significant using a one-tail hypothesis test? Please show a full set of steps for your hypothesis testing