i will brainlist who answer this properly, pls im begging u to not answer nonsense it doesnt help me.

1. CJ wanted to see if listening to music would make the basketball players make
more baskets. On day one, he didn’t play any music and counted how many
baskets they could make in 10 minutes. On day 2, he played rap music and
counted the baskets, and on day 3, he played classical music and counted the
baskets.
Hypothesis: _______________________________________________________
Independent variable: _______________________________________________
Dependent variable: ________________________________________________
2. Alex wanted to find out what toothpaste made teeth the cleanest. Every day she
brushed her teeth with a different product and then took a plaque test to see how
much plaque was left. She used Crest, Colgate, Close-up, and water.
Hypothesis: _______________________________________________________
Independent variable: _______________________________________________
Dependent variable: ________________________________________________

3. Anna wanted to see what battery lasted the longest. She put each battery into a
clock and recorded the time that the clock stopped. She used Duracell, Energizer,
Kroger brand, and EverReady.
Hypothesis: _______________________________________________________
Independent Variable: ______________________________________________
Dependent variable: ________________________________________________

4. Fredrick wanted to find out what soil works best for growing roses. He grew them
in potting soil, clay, sand, and soil he found outside his yard. After one week, he
measured their height and how many leaves they had.
Hypothesis: _______________________________________________________
Independent Variable: ______________________________________________
Dependent variable: ________________________________________________