what is the meaning of chi-squared test with a result of 40.068, and what does it tell us? and hat is the possible confidence interval data used below to find chi-squred > Systolic [1] 132 125 143 144 130 143 133 130 124 124 [11] 131 106 105 125 119 107 122 117 120 133 21 180 121 114 160 160 122 107 131 114 106 31 158 117 97 93 130 141 149 130 130 136 41 146 241 121 122 134 135 105 178 143 112 (51] 92 117 162 111 107 135 136 126 122 106 > Age [1] 55 67 56 27 45 66 54 65 30 35 36 48 30 [14 45 43 32 51 20 39 42 54 32 22 61 54 50 27 38 36 55 37 50 32 31 21 43 48 54 37 43 40 47 72 48 46 37 61 46 30 40 64 22 45 43 (53) 66 42 59 56 38 22 52 24