Question

Mr. James, the owner of Squeaky Clean Floor Company, invented a solution that he claims is better than the other top three selling floor cleaners. To prove his claim, Mr. James performed several experiments. His results appear below.

Brand of Floor Cleaner Type of Floor Type of Debris
Spread on Floor # of Trials Cleaned Floor?
Squeaky Clean Brand Vinyl Dust 5 yes
Leading Brand 1 Vinyl Grease 5 no
Leading Brand 2 Vinyl Paint 5 no
Leading Brand 3 Vinyl Mud 5 no
Which of the following is true of Mr. James' experimental procedures and results?

Answer 1

Mr. James' results are biased. He selected different types of debris to make it easier for his floor cleaner to be effective.

Step-by-step explanation:

study island

Answer 2

the answer is b

Step-by-step explanation:

it was b on my test let me know if I am wrong.