Which of the following best describes the effect the moon has on the tides? A
The gravity of the moon pulls the ocean, which causes the tides.

B
When the moon is invisible in the sky, tides cannot be seen.

C
Tides only happen at night when the moon is visible.

D
The moon’s light makes it possible to see the tides at night.

Astudy was interested in determining if eating milk chocolate lowered someone's cholesterol levels. ten people's cholesterol was measured. then, each of these individuals were told to eat 100g of milk chocolate every day and to eat as they normally did. after two weeks, their cholesterol levels were measured again. is there evidence to support that their cholesterol levels went down? how should we write the alternative hypothesis? (mud = the population mean difference= before - after)a. ha: mud = 0b. ha: mud > 0c. ha: mud < 0d. ha: mud does not equal 0