Profitability remains a challenge for banks and thrifts with less than $2 billion of assets. The business problem facing a bank analyst relates to the factors that affect return on assets (ROA), an indicator of how profitable a company is relative to its total assets. Data collected from a sample of 80 community banks include the ROA (0/0), the efficiency ratio (0/6), as a measure of bank productivity (the lower the efficiency ratio, the better), and total risk-based capital (9/0); as a measure of capital adequacy. Use the accompanying multiple linear regression results to complete pans (a) and (b) below. Variable Intercept Effciency Ratio, Xl Risk-Based Capital; Coefficient - 0 29903 0.01669 0.04803 Standard Error 0 44052 000553 001949 t Statistic -0 68 3.02 2.46 p-value 0.4993 0.0034 0.0160 a. Construct a 95% confidence interval estimate of the population slope between ROA and efficiency ratio. (Round to four decimal places as needed)