Exhibit 15-6

Exhibit 15-6.Tiffany & Co.has been the world's premier jeweler since 1837.The performance of Tiffany's stock is likely to be strongly influenced by the economy.Monthly data for Tiffany's risk-adjusted return and the risk-adjusted market return are collected for a five-year period (n = 60) .The accompanying table shows the regression results when estimating the CAPM model for Tiffany's return. Refer to Exhibit 15-6.When testing whether the beta coefficient is significantly greater than one,the value of the test statistic is

A) -98.
B) 1.98.
C) 4.33.
D) 9.58.