Is there a difference in TV "on" time between these cities?
An independent researcher has decided to study variations in TV viewing habits among three American cities. She has managed to randomly sample households in Chicago, Atlanta, and Minneapolis and gather data on the daily "on" times for households on a typical day. The data is given below. Can we say with statistical certainty there are differences in TV "on" time between these cities?
Atlanta
|
499
|
472
|
482
|
441
|
|
505
|
484
|
472
|
512
|
|
494
|
514
|
499
|
491
|
|
479
|
478
|
482
|
489
|
|
462
|
458
|
468
|
505
|
|
496
|
461
|
447
|
470
|
|
496
|
458
|
482
|
460
|
|
487
|
501
|
480
|
500
|
|
491
|
491
|
470
|
473
|
Minneapolis
|
516
|
554
|
579
|
555
|
534
|
|
577
|
478
|
529
|
601
|
555
|
|
573
|
582
|
602
|
591
|
580
|
|
522
|
538
|
535
|
603
|
582
|
|
573
|
621
|
571
|
574
|
609
|
|
554
|
552
|
547
|
607
|
583
|
|
578
|
583
|
541
|
541
|
|
|
603
|
540
|
512
|
591
|
|
|
532
|
580
|
551
|
551
|
|
|
459
|
541
|
502
|
559
|
|
|
516
|
505
|
498
|
539
|
|
|
562
|
511
|
468
|
506
|
|
|
498
|
497
|
526
|
500
|
|
|
545
|
530
|
548
|
486
|
|
|
515
|
548
|
478
|
519
|
|
|
529
|
465
|
479
|
|
|
Conclude the total sum of square in single factor ANOVA.