Question

krusty the clown was told that a certain itching powder was the newest best thing on the market; it even claims to cause 50% longer lasting itches. interested in this product, he buys the itching powder and compares it to his usual product. one test subject (a) is sprinkled with the original itching powder, and another test subject (b) is sprinkled with the experimental itching power. subject a reported having itches for 30 minutes, subject b reported to have itches for 45 minutes. 20. hypothesis 21. control group 22. experimental group 23. independent variable 24. dependent variable 25. did the claims of the new product meet experiment outcome? did it meet expectat

Explanation:

Step1: Define hypothesis

The hypothesis is a prediction about the effect of the new itching powder. It is: The new itching powder causes 50% longer - lasting itches compared to the original.

Step2: Identify control group

The control group is the group that serves as a baseline for comparison. Here, Test subject A sprinkled with the original itching powder is the control group.

Step3: Identify experimental group

The experimental group is the group that receives the treatment being tested. Test subject B sprinkled with the new experimental itching powder is the experimental group.

Step4: Identify independent variable

The independent variable is the variable that is changed or manipulated in an experiment. The type of itching powder (original or new) is the independent variable.

Step5: Identify dependent variable

The dependent variable is the variable that is measured or observed. The duration of the itch is the dependent variable.

Step6: Analyze claim

The original itch lasted 30 minutes. A 50% increase of 30 minutes is $30+(30\times0.5)=45$ minutes. Subject B had itches for 45 minutes, so the claim of the new product was met.

Answer:

1. The new itching powder causes 50% longer - lasting itches compared to the original.
2. Test subject A (sprinkled with original itching powder)
3. Test subject B (sprinkled with new experimental itching powder)
4. Type of itching powder (original or new)
5. Duration of the itch
6. Yes, the claims of the new product met the experiment outcome.