Satisfaction Scores: 7.80 9.50 9.20 9.30 8.90 9.80 8.60 9.10 7.80 7.80 7.00 9.70 8.20 8.30 8.70 9.70 9.90 8.40 9.90 7.00 Consider the data above that shows customer satisfaction survey scores data below for a consumer product. For an alpha or significance of 0.05, the Null Hypothesis is that Sample Average <= 8.0. What is the t-stat?.