Question

3 - marshmallow muscles
larry was told that a certain muscle cream was the newest best thing on the market and claims to double a persons muscle power when used as part of a muscle - building workout. interested in this product, he buys the special muscle cream and recruits patrick and spongebob to help him with an experiment. larry develops a special marshmallow weight - lifting program for patrick and spongebob. he meets with them once every day for a period of 2 weeks and keeps track of their results. before each session patricks arms and back are lathered in the muscle cream, while sponge bobs arms and back are lathered with the regular lotion.
which person is in the control group?
what is the independent variable?
what is the dependent variable?
what should larrys conclusion be?
time patrick spongebob
initial amount 18 5
after 1 week 24 9
after 2 weeks 33 17

Explanation:

1. The control group is the one not receiving the treatment (muscle - cream). SpongeBob is lathered with regular lotion, so he is in the control group.
2. The independent variable is the factor being changed or manipulated, which is the type of cream (muscle cream vs regular lotion).
3. The dependent variable is the outcome being measured, which is the amount of marshmallow weight - lifting power.
4. Patrick, who used the muscle cream, showed a greater increase in weight - lifting power over 2 weeks compared to SpongeBob. So, the muscle cream may be effective in increasing muscle power as part of the workout, but more research with a larger sample size and better controls may be needed.

Answer:

1. SpongeBob
2. Type of cream (muscle cream vs regular lotion)
3. Amount of marshmallow weight - lifting power
4. The muscle cream may be effective in increasing muscle power as part of the workout, but more research is needed.