Determine the margin of error that would be used to estimate the slope for a least squares simple linear regression model if the (standard error)

Determine the margin of error that would be used to estimate the slope for a least squares simple linear regression model if the (standard error) simple regression estimator for the standard deviation of the slope was 3.47, there were 23 observations in the data set for the sample, and the desired level of significance (alpha) is 0.10. Use the appropriate critical value of t.