can you help me solve 14 Answer 14 SAT coaching A sample of

Answer 14. SAT coaching: A sample of 32 students took a class designed to improve their SAT math scores Following are their scores before and after the class. Before 383 334 378 467 470 473 443 459 426 493 382 473 408 433 478 502 After Before 420 368 396 488 489 473 448 473 428 525 382 474 407 434 490 508 After 394 513 483 447 440 439 435 451 453 491 526 473 440 481 459 399 430 525 482 482 479 451 431 454 463 511 529 493 466 482 455 404

Solution