II- The owner of a sports memorabilia store wants to estimate the mean value of his baseball card inventory. A random sample of 100 cards indicates a mean value of $9 and a standard deviation of $2:

a) Construct a 95% confidence interval estimation of the mean value of his baseball card inventory.

b)  Interpret the interval Constructed in a)

c)  If the owner had 10,000 cards in his inventory, use the results in part (a) to estimate the total value of the inventory.