Question

Subject: Hypothesis test of a standard deviation (one population) and two standard deviations (two populations).

Instructions: Present the manual calculations of (1) statistical tests and (2) confidence intervals, the populations are low season and high season.
Times of Lane C (in Total time (A+B+C in Times of Lane A (in seconds) seconds) 478 202 Times of Lane B (in seconds) seconds) 359 439 312 594 709 515 480 325 218 311 404 325 306 205 540 193 284 448 283 492 268 426 364 1270 334 1005 840 669 135 135 152 152 295 168 433 548 398 290 124 105 208 325 236 237 9 9 0 138 185 52 72 69 10 73 266 231 108 164 386 163 398 162 108 9 30 119 831 175 261 278 260 420 297 292 374 210 178 37 677 273 142 154 147 230 168 130 130 614 546 391 Legend Low season High season

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