# Lifeboats 3

## Purpose and Matierials

Our purpose is to see how many pennies can go into a 3cm dixie cup with 2 different liquids, Diet Dr.pepper, and saltwater. We will also do a new control to be sure we get the right information. There will be 3 trials and a mean. We used a dixie cup, a basin, Diet Dr.Pepper, salt, and water. Collecting Info: One penny weighs 2.5 grams. The basin will be half full, and the dixie cup will be 3cm tall.

## Hypothesis

• 21 pennies in Diet Dr.pepper
• 16 pennies in saltwater
• 15 pennies in regular water

## Expierment

Diet Dr.Pepper's first trial had 13 then 14 then 13 so the mean was 13.3. The 3 at the end repeating. Then saltwater got all 14, and plain water got all 16's. So you can probably tell what the mean was there.

## Results

Our hypothesis for Dr.Pepper was incorrect, but the others for the most part still were pretty much correct, just 2 away from saltwater's and 1 from regular water. I learned there is a very small change in the number of pennies in diet Dr.Pepper and in saltwater. Still, if you want more pennies in a cup, use regular water, if you want a small amount of pennies, use Diet Dr.Pepper, and in between saltwater. What I would improve is the type of cup in the liquids. I still wonder what to do next, and why Diet Dr.Pepper held less then regular water and saltwater.