A study showed that people who take St. John's Wort daily have a significantly better chance of protecting against depression than those who did not take the vitamin daily. Which of the following statements is/are correct? Can be more than one answer a. This study provides evidence that taking St. John's Wort daily contributes to protecting against depression.
b. This is an observational study and not an experiment.
c. The general health consciousness of people who take St. John's Wort could be a confounding variable.

Here is a picture with the anwser i hope i helped!

:D

ci

step-by-step explanation:

answer: the price of one pound cabbage = $ 0.8

the point (10,8) represents that the cost of 10 pounds cabbage is $ 8

step-by-step explanation:

since, here is a proportional relation between the number of pounds of cabbage (x) and the price in dollars (y).

therefore, we can write,

⇒ y = k x

where k is the constant of proportionality.

now, point (5,4) is in the line.

thus, it will satisfies the above equation of line.

⇒ 4 = 5 k

⇒ k = 0.8

thus, the equation of the line is,

y = 0.8 x

a) for x = 1,

y = 0.8

therefore, the cost of one pound of cabbage is 0.8 dollars.

b) in the below graph (10,8) represents that the cost of 10 pounds of cabbage is 8 dollars.