A 65-year-old woman with low bone density in 1992 was treated with alendronatethrough the year 1999. Bone density was measured irregularly over the...

A 65-year-old woman with low bone density in 1992 was treated with alendronatethrough the year 1999. Bone density was measured irregularly over the period. The results for change in bone density of the lumbar spine are shown in Table 11.26 11.77) The normal change in bone density over time from age 40 to age 80 is a decrease of 0.15 g/cm2. Does the rate of change in this woman differ significantly from the expected age related change?