
Answer:
estimated coefficient for size = 4.6
Step-by-step explanation:
We have given that
Variable        Coefficients      Standard      Error t-Stat
Intercept          13                             4.5
Size                              2.2            2.1
BR Â Â Â Â Â Â Â Â Â Â Â Â Â Â 6.8 Â Â Â Â Â Â Â Â Â Â Â Â Â 2
The standard error = 2.2
T stat= 2.1
Formula:. t stat = estimated coefficient/ standard error
Estimated coefficient= t stat* standard error
Estimated coefficient= 2.1*2.2
                  =4.62
                  ≈4.6
Thus, estimated coefficient for size = 4.6