Profitability remains a challenge for banks and thrits with less than $$2$ billion of assets. The businass problem facing a bank analyst relates to the factors that affect retum on assets $($ROA$),$ an indicator of how profitable a company is relative to its total assets. Data collected from a sample of $20$ community banks include the ROA $(\%),$ the efficiency ratio $(\%),$ as a measure of bank productivity $($the lower the efficiency ratio, the better$),$ and total risk$-$based capital $(\%),$ as a measure of capital adequacy. Complete parts $($a$)$ through $($g$)$ below.

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c$.$ Predict the mean ROA when the efficiency is $70\%$ and the total risk$-$based capital is $15\%.$

hat$(Y{)}_i=+|,|x_{1i}+|,|x_{2i}$

$($Round to two decimal places as needed.$)$

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$\backslash$table$[[$ROA $(\%),\backslash$table$[[$Efficiency$],[$Ratio $(\%)$