Researchers measured the bone mineral desnsity of the spines of 94 women who had taken teh drug CEE. The mean was 1.016 g/cm2, and the standard deviation was 0.155 g/cm2. What is the 99% confidence interval for the mean?

- 0.978, - 1.054

1.978, 2.054

0.978, 1.054

9.781, 5.041