A hydrologist believes that there has been a reduction in the mean water volume passing through a dam. He measured flow at ten specific points on the dam last year (Time 1). He has since remeasured flow at the same points at the same time of year (Time 2). Compute the test statistic (using Time 1 - Time 2), using Excel or Minitab to calculate dand Sd. Location Time 1 Time 2 367 ft3 365 fts 358 ft3 367 fts 347 ft3 339 fts 372 f13 367 fts 370 fts 369 fts 354 ft3 323 fts 361 ft3 352 ft3 8 383 ft3 379 ft3 W 366 ft3 368 ft3 10 370 fts 367 fts