51. Consider the CSRSX fund in Table 5.10 (whose standard deviation is 24.1%) discussed in Example 14 (page 207). Complete these sentences: In about two-thirds of future annual returns, the fund is expected to earn about 12.15% each year, plus or minus ______. This means that in two-thirds of future years, the fund may do as well as ______% or as poorly as _____%.