Question

A scientist conducted an experiment to determine whether an organic cleaner is as effective as a non-organic cleaner in killing germs that cause colds and the flu. To conduct the experiment, the scientist randomly selected 50 doorknobs in a hospital. He cleaned 25 of the door knobs with the organic cleaner, and he cleaned the remaining 25 door knobs with the non-organic cleaner. After cleaning and testing all of the doorknobs, the scientist reported that the organic cleaner killed 90% of germs that cause colds and the flu on the doorknobs, while the non-organic cleaner killed 95% of germs that cause colds and the flu on the doorknobs. What can be concluded from the scientist's report?

Answer 1

Therefore, an organic cleaner is not as effective as a non-organic cleaner in killing germs that cause colds and the flu.

Answer 2

The conclusions from the scientist's report are as follows:

1. A non-oraganic cleaner is 95% effective
2. An organic cleaner is 90% effective
3. Therefore, an organic cleaner is not as effective as a non-organic cleaner in killing germs that cause colds and the flu.