Injury Year	Estimated # claims	Estimated $ per claim
1994	1021	$415,326.26
1995	1087	$448,871.57
1996	1184	$477,333.66
1997	1291	$490,215.19
1998	1191	516,696.63
1999	1098	587,233.93
2000	1055	536,983.82
2001	1110	403,504.39

a. Calculate the mean or average number of claims per year for medical malpractice insurance in Texas over the four-year period 1994-1997

b. Calculate the mean or average number of claims per year for medical malpractice insurance in Texas over the four-year period 1998-2001.

c. Calculate the mean or average dollar value per claim per year for medical malpractice insurance in Texas over the four-year period 1994-19987 (in 2009 dollars).

d. Calculate the mean or average dollar value per claim per year for medical malpractice insurance in Texas over the four-year period 1998-2001 (in 2009 dollars).