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For this assignment, we will be returning to the diamond dataset that was used for examples during lecture. Focus on the variable Price only. Using

For this assignment, we will be returning to the diamond dataset that was used for examples during lecture. Focus on the variable Price only. Using the data provided, answer the following questions and provide the requested analysis. 1) Construct a dotplot depicting the distribution of diamond prices in the sample (be sure to adequately label your dotplot, clearly labeling the axes and indicate units of measurement). - 2 pts 2) Based on the dotplot constructed in part (1), is it reasonable to conclude the diamond prices follow a Normal distribution? Justify your answer. - pt For parts (3) - (5), assume the variance of diamond prices is 11,000,000. 3) Construct a 90% Confidence Interval for the mean diamond price. - 2 pts 4) Calculate the precision of the 90% Confidence Interval for the mean diamond price constructed in part (3). - pt 5) How many diamonds would need to be sampled in order to achieve a precision of $100 at a level of confidence of 95%? - 1 pt

PRICE - in Singapore dollars IDNO WEIGHT COLOR CLARITY RATER PRICE 1 0.3 D VS2 GIA 1302 2 0.3 E VS1 GIA 1510 3 0.3 G VVS1 GIA 1510 4 0.3 G VS1 GIA 1260 5 0.31 D VS1 GIA 1641 6 0.31 E VS1 GIA 1555 7 0.31 F VS1 GIA 1427 8 0.31 G VVS2 GIA 1427 9 0.31 H VS2 GIA 1126 10 0.31 I VS1 GIA 1126 11 0.32 F VS1 GIA 1468 12 0.32 G VS2 GIA 1202 13 0.33 E VS2 GIA 1327 14 0.33 I VS2 GIA 1098 15 0.34 E VS1 GIA 1693 16 0.34 F VS1 GIA 1551 17 0.34 G VS1 GIA 1410 18 0.34 G VS2 GIA 1269 19 0.34 H VS1 GIA 1316 20 0.34 H VS2 GIA 1222 21 0.35 E VS1 GIA 1738 22 0.35 F VS1 GIA 1593 23 0.35 G VS1 GIA 1447 24 0.35 H VS2 GIA 1255 25 0.36 F VS1 GIA 1635

26 0.36 H VVS2 GIA 1485 27 0.37 F VS2 GIA 1420 28 0.37 H VS1 GIA 1420 29 0.4 F VS1 GIA 1911 30 0.4 H VS1 GIA 1525 31 0.41 F VS1 GIA 1956 32 0.43 H VVS2 GIA 1747 33 0.45 I VS1 GIA 1572 34 0.46 E VVS2 GIA 2942 35 0.48 G VVS2 GIA 2532 36 0.5 E VS1 GIA 3501 37 0.5 E VS1 GIA 3501 38 0.5 F VVS2 GIA 3501 39 0.5 F VS1 GIA 3293 40 0.5 G VS1 GIA 3016 41 0.51 F VVS2 GIA 3567 42 0.51 G VS1 GIA 3205 43 0.52 D VS2 GIA 3490 44 0.52 E VS1 GIA 3635 45 0.52 F VVS2 GIA 3635 46 0.52 F VS1 GIA 3418 47 0.53 D VS1 GIA 3921 48 0.53 F VVS2 GIA 3701 49 0.53 F VS1 GIA 3480 50 0.53 G VVS2 GIA 3407 51 0.54 E VS1 GIA 3767 52 0.54 F VVS1 GIA 4066 53 0.55 E VVS2 GIA 4138 54 0.55 F VS1 GIA 3605 55 0.55 G VVS2 GIA 3529 56 0.56 F VS1 GIA 3667 57 0.56 I VVS2 GIA 2892 58 0.57 G VVS2 GIA 3651 59 0.59 G VVS2 GIA 3773 60 0.6 F VS1 GIA 4291 61 0.62 E VVS1 GIA 5845 62 0.63 G VVS2 GIA 4401 63 0.64 G VVS1 GIA 4759 64 0.66 H VVS1 GIA 4300 65 0.7 F VS1 GIA 5510 66 0.7 G VS1 GIA 5122 67 0.7 H VVS2 GIA 5122 68 0.7 I VS2 GIA 3861 69 0.71 F VVS2 GIA 5881 70 0.71 F VS1 GIA 5586 71 0.71 F VS2 GIA 5193 72 0.71 H VVS2 GIA 5193 73 0.72 F VS2 GIA 5263 74 0.8 I VVS2 GIA 5441 75 0.82 I VS2 GIA 4948 76 0.84 H VS2 GIA 5705 77 0.85 F VS2 GIA 6805 78 0.86 H VVS2 GIA 6882 79 0.89 H VS1 GIA 6709

80 0.9 I VVS2 GIA 6682 81 0.5 E VS1 GIA 3501 82 0.5 G VVS1 GIA 3432 83 0.51 F VVS1 GIA 3851 84 0.55 H IF GIA 3605 85 0.56 E VS1 GIA 3900 86 0.57 H VVS1 GIA 3415 87 0.6 H IF GIA 4291 88 0.63 E IF GIA 6512 89 0.7 E VS1 GIA 5800 90 0.7 F VVS1 GIA 6285 91 0.7 F VS2 GIA 5122 92 0.7 F VS2 GIA 5122 93 0.7 G VS1 GIA 5122 94 0.7 H VVS2 GIA 5122 95 0.71 D VS1 GIA 6372 96 0.71 E VS1 GIA 5881 97 0.71 H VVS2 GIA 5193 98 0.72 E VS1 GIA 5961 99 0.72 H VVS1 GIA 5662 100 0.73 E VS2 GIA 5738 101 0.73 H VS1 GIA 5030 102 0.73 H VS1 GIA 5030 103 0.73 I VVS1 GIA 4727 104 0.73 I VS1 GIA 4221 105 0.74 G VVS2 GIA 5815 106 0.74 H VS2 GIA 4585 107 0.75 D VVS2 GIA 7368 108 0.75 I VVS2 GIA 4667 109 0.75 I VS1 GIA 4355 110 0.76 D IF GIA 9885 111 0.77 F VVS1 GIA 6919 112 0.78 H VS1 GIA 5386 113 0.8 I VS2 GIA 4832 114 0.83 E VS2 GIA 7156 115 0.9 F VS1 GIA 7680 116 1 D VVS1 GIA 15582 117 1 D VS1 GIA 11419 118 1 E VS1 GIA 10588 119 1 E VS2 GIA 9757 120 1 F IF GIA 13913 121 1 F VVS2 GIA 10588 122 1 F VS1 GIA 10713 123 1 F VS2 GIA 9480 124 1 G VVS2 GIA 9896 125 1 G VS1 GIA 9619 126 1 G VS2 GIA 9169 127 1 G VS2 GIA 9203 128 1 H VS2 GIA 8788 129 1 I VS1 GIA 8095 130 1 I VS2 GIA 7818 131 1.01 D VVS1 GIA 16008 132 1.01 E VS1 GIA 10692 133 1.01 E VS2 GIA 9853

134 1.01 F VS1 GIA 10272 135 1.01 F VS2 GIA 9573 136 1.01 H VS1 GIA 9153 137 1.01 H VS2 GIA 8873 138 1.01 I VVS1 GIA 8873 139 1.01 I VVS2 GIA 8455 140 1.01 I VS2 GIA 7895 141 1.02 F VS1 GIA 10372 142 1.02 F VS2 GIA 9666 143 1.02 G VVS2 GIA 10090 144 1.03 E VS1 GIA 10900 145 1.04 F VS1 GIA 10571 146 1.04 I IF GIA 9563 147 1.05 I VVS2 GIA 8781 148 1.06 G VS2 GIA 9743 149 1.06 H VS2 GIA 9302 150 1.07 I VVS2 GIA 8945 151 1.1 H VS2 GIA 9646 152 0.18 F VVS1 IGI 823 153 0.18 F VVS2 IGI 765 154 0.18 G IF IGI 803 155 0.18 G IF IGI 803 156 0.18 G VVS2 IGI 705 157 0.18 H IF IGI 725 158 0.19 D VVS2 IGI 967 159 0.19 E IF IGI 1050 160 0.19 F IF IGI 967 161 0.19 F VVS1 IGI 863 162 0.19 F VVS2 IGI 800 163 0.19 G IF IGI 842 164 0.19 G VVS1 IGI 800 165 0.19 H IF IGI 758 166 0.2 D VS1 IGI 880 167 0.2 G IF IGI 880 168 0.2 G VS1 IGI 705 169 0.2 G VS2 IGI 638 170 0.21 D VS1 IGI 919 171 0.21 E IF IGI 1149 172 0.21 F IF IGI 1057 173 0.21 G IF IGI 919 174 0.22 E IF IGI 1198 175 0.23 E IF IGI 1248 176 0.23 F IF IGI 1147 177 0.23 G IF IGI 995 178 0.24 H IF IGI 1108 179 0.25 F IF IGI 1485 180 0.25 G IF IGI 1283 181 0.25 H IF IGI 1149 182 0.25 I IF IGI 1082 183 0.26 F IF IGI 1539 184 0.26 F VVS1 IGI 1365 185 0.26 F VVS2 IGI 1260 186 0.26 I IF IGI 1121 187 0.27 F IF IGI 1595

188 0.27 H IF IGI 1233 189 0.28 I IF IGI 1199 190 0.29 G IF IGI 1471 191 0.29 I IF IGI 1238 192 0.3 E VVS2 IGI 1580 193 0.3 F VVS2 IGI 1459 194 0.3 G VVS1 IGI 1459 195 0.3 H VVS2 IGI 1218 196 0.3 I IF IGI 1299 197 0.31 E VVS2 IGI 1628 198 0.31 F VVS1 IGI 1628 199 0.31 I IF IGI 1337 200 0.32 H IF IGI 1462 201 0.33 H IF IGI 1503 202 0.34 F VVS1 IGI 1773 203 0.34 F VVS2 IGI 1636 204 0.35 F VVS1 IGI 1821 205 0.35 G VVS2 IGI 1540 206 0.4 G IF IGI 2276 207 0.41 I VVS1 IGI 1616 208 0.41 I VVS2 IGI 1506 209 0.47 F VVS2 IGI 2651 210 0.48 F VS1 IGI 2383 211 0.5 G IF IGI 3652 212 0.51 E VVS2 IGI 3722 213 0.51 F VVS1 IGI 3722 214 0.52 I IF IGI 3095 215 0.55 F VVS2 IGI 3706 216 0.56 E VVS2 IGI 4070 217 0.56 G VVS2 IGI 3470 218 0.58 E VVS1 IGI 4831 219 0.58 F VVS1 IGI 4209 220 0.58 G VVS1 IGI 3821 221 0.7 G VVS1 IGI 5607 222 0.7 G VVS2 IGI 5326 223 0.71 D VS1 IGI 6160 224 0.76 F VVS2 IGI 6095 225 0.78 G VVS2 IGI 5937 226 1 H VVS2 IGI 9342 227 1.01 G VS1 IGI 9713 228 1.01 H VS2 IGI 8873 229 1.01 I VS1 IGI 8175 230 0.5 F VVS1 HRD 3778 231 0.5 G VVS1 HRD 3432 232 0.51 F VVS1 HRD 3851 233 0.52 E VS2 HRD 3346 234 0.52 H VVS1 HRD 3130 235 0.53 F VVS1 HRD 3995 236 0.53 F VVS2 HRD 3701 237 0.55 G VVS2 HRD 3529 238 0.56 F VS1 HRD 3667 239 0.56 F VS2 HRD 3202 240 0.57 F VS2 HRD 3256 241 0.57 H VVS1 HRD 3415

242 0.58 H IF HRD 3792 243 0.6 G VS1 HRD 3925 244 0.6 G VS2 HRD 3421 245 0.6 H VVS1 HRD 3925 246 0.61 H VVS2 HRD 3616 247 0.62 I VVS2 HRD 3615 248 0.64 H VVS2 HRD 3785 249 0.65 I VVS2 HRD 3643 250 0.66 H VVS1 HRD 4300 251 0.7 E VVS1 HRD 6867 252 0.7 E VVS2 HRD 6285 253 0.7 G VVS1 HRD 5800 254 0.7 G VVS2 HRD 5510 255 0.7 H VS2 HRD 4346 256 0.71 G IF HRD 6372 257 0.71 H VVS2 HRD 5193 258 0.72 H VVS1 HRD 5662 259 0.73 F VS2 HRD 5333 260 0.73 G VVS1 HRD 6041 261 0.74 H VVS1 HRD 5815 262 0.8 F IF HRD 8611 263 0.8 F VS1 HRD 6905 264 0.8 G VVS2 HRD 6905 265 0.8 H VVS2 HRD 6416 266 0.8 H VS1 HRD 6051 267 0.81 E VVS1 HRD 8715 268 0.81 E VS2 HRD 6988 269 0.81 F VS1 HRD 6988 270 0.81 G VS1 HRD 6495 271 0.81 H IF HRD 7358 272 0.82 F VS2 HRD 6572 273 0.82 G VVS2 HRD 7072 274 0.85 F VVS1 HRD 8359 275 0.85 F VS2 HRD 6805 276 0.85 G VVS1 HRD 7711 277 0.86 H VS2 HRD 5835 278 1 D VVS2 HRD 13775 279 1 E VVS1 HRD 14051 280 1 E VVS2 HRD 11419 281 1 E VS1 HRD 10588 282 1 F VVS1 HRD 11696 283 1 F VVS2 HRD 10588 284 1 G VVS1 HRD 10450 285 1 G VVS2 HRD 9896 286 1 G VS2 HRD 9203 287 1 H VVS1 HRD 9480 288 1 H VS1 HRD 9065 289 1 H VS2 HRD 8788 290 1 I VVS1 HRD 8788 291 1 I VVS2 HRD 8372 292 1 I VS1 HRD 8095 293 1 I VS2 HRD 7818 294 1.01 D VVS2 HRD 13909 295 1.01 E VVS2 HRD 11531

296 1.01 E VS1 HRD 10692 297 1.01 F VVS1 HRD 11811 298 1.01 F VS1 HRD 10272 299 1.01 G VVS2 HRD 9993 300 1.01 G VS2 HRD 9293 301 1.01 H VVS2 HRD 9433 302 1.01 H VS1 HRD 9153 303 1.01 I VVS1 HRD 8873 304 1.01 I VS1 HRD 8175 305 1.02 F VVS2 HRD 10796 306 1.06 H VVS2 HRD 9890 307 1.02 H VS2 HRD 8959 308 1.09 I VVS2 HRD 9107

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