Using the data shown in the table here,

, that contains historical monthly prices and dividends (paid at the end of the month) for Ford Motor Company stock (Ticker: F) from August 1994 to August 1998, compute the:

a. Average monthly return over this period.

b. Monthly volatility (or standard deviation) over this period.

c. 95% confidence interval of the estimate of the average monthly return.

Here is the data set

Date Stock Price Dividend Return ( % ) 1+Rt Aug-94 29.250 0.000 Sep-94 27.750 0.000 -5.13 0.949 Oct-94 29.500 0.260 7.24 1.072 Nov-94 27.125 0.000 -8.05 0.919 Dec-94 27.875 0.000 2.76 1.028 Jan-95 25.250 0.260 -8.48 0.915 Feb-95 26.125 0.000 3.47 1.035 Mar-95 26.875 0.000 2.87 1.029 Apr-95 27.125 0.310 2.08 1.021 May-95 29.250 0.000 7.83 1.078 Jun-95 29.750 0.000 1.71 1.017 Jul-95 29.000 0.310 -1.48 0.985 Aug-95 30.750 0.000 6.03 1.060 Sep-95 31.125 0.000 1.22 1.012 Oct-95 28.750 0.350 -6.51 0.935 Nov-95 28.250 0.000 -1.74 0.983 Dec-95 28.875 0.000 2.21 1.022 Jan-96 29.500 0.350 3.38 1.034 Feb-96 31.250 0.000 5.93 1.059 Mar-96 34.375 0.000 10.00 1.100 Apr-96 35.875 0.350 5.38 1.054 May-96 36.500 0.000 1.74 1.017 Jun-96 32.375 0.000 -11.30 0.887 Jul-96 32.375 0.385 1.19 1.012 Aug-96 33.500 0.000 3.47 1.035 Sep-96 31.250 0.000 -6.72 0.933 Oct-96 31.250 0.385 1.23 1.012 Nov-96 32.750 0.000 4.80 1.048 Dec-96 32.250 0.000 -1.53 0.985 Jan-97 32.125 0.385 0.81 1.008 Feb-97 32.875 0.000 2.33 1.023 Mar-97 31.375 0.000 -4.56 0.954 Apr-97 34.750 0.420 12.10 1.121 May-97 37.500 0.000 7.91 1.079 Jun-97 38.000 0.000 1.33 1.013 Jul-97 40.875 0.420 8.67 1.087 Aug-97 43.000 0.000 5.20 1.052 Sep-97 45.125 0.000 4.94 1.049 Oct-97 43.688 0.420 -2.25 0.977 Nov-97 43.000 0.000 -1.57 0.984 Dec-97 48.563 0.000 12.94 1.129 Jan-98 51.000 0.420 5.88 1.059 Feb-98 56.563 0.000 10.91 1.109 Mar-98 64.813 0.000 14.59 1.146 Apr-98 45.813 23.680 7.22 1.072 May-98 51.875 0.000 13.23 1.132 Jun-98 59.000 0.000 13.73 1.137 Jul-98 57.000 0.420 -2.68 0.973 Aug-98 44.625 0.000 -21.71 0.783