Question

Roy's Toys received a shipment of 100,000 rubber duckies from the factory. The factory couldn't promise that all rubber duckies are in perfect form, but they promised that the percentage of defective toys won't exceed 5\%5%. Roy wanted to get an estimation of the percentage of defective toys, and since he couldn't go over the entire 100{,}000100,000 duckies, he took a random sample of 10 duckies. He found that 10% of them were defective. What type of statistical study did Roy use?

Answer 1

Roy used a statistical study called hypothesis testing to estimate the percentage of defective toys in the shipment.

Step-by-step explanation:

Roy used a statistical study called hypothesis testing to estimate the percentage of defective toys in the shipment. He took a random sample of 10 duckies and found that 10% of them were defective. By comparing this sample proportion to the promised percentage of 5%, Roy can make a conclusion about whether the percentage of defective toys in the entire shipment is larger than 5% or not.

Answer 2

It's a "Sample Study"

Mark the most suitable choice; "No because his sample was too small."

Step-by-step explanation:

Dude only sampled 10 out of 100k rubber ducks and thought it would be an accurate representation.