Human capital theory suggests that those who have invested in higher levels of education will be able to command higher

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Human capital theory suggests that those who have invested in
higher levels of education will be able to command higher wages. A
labour economist collected data on annual wages (Y, in $'000) and
years of study (X) from a random sample of 12 employees to test
this proposition. Assuming a linear relationship between Y and X,
the labour economist used a least-squares method and found that the
Y intercept = -23.50 and the slope = 9.73. Also, the sum of
squares total (SST) and the sum of squares regression (SSR) were
equal to 11132.92 and 8726.91, respectively. What is
the lower bound of a
95% confidence interval estimate of the
population mean annual wages (in $'000) for 10 years of study.
Assumer the h Statistic is 0.10.
less than $50
greater than $61
greater than $50 but less than $60
greater than $50 but less than $55