When writing a set of hypotheses for a situation, which of the following is true?

the null hypothesis is a claim the researcher is trying to disprove
the null hypothesis is a claim the researcher believes to be true.
the alternate hypothesis is a claim the researcher is trying to disprove
the alternate hypothesis is always supported by the data.

when writing a set of hypotheses for a situation, which of the following is true?

the null hypothesis is a claim the researcher is trying to prove.
the null hypothesis is always supported by the data.
the alternate hypothesis is a claim the researcher is trying to prove
the alternate hypothesis is always supported by the data.

a researcher believes that children that drink conventional milk will grow taller than children that drink organic milk due to the differences in the hormones that are fed to the cows. given:

μc = average height of children drinking convential milk

μc = average height of children drinking organic milk

what is the null hypothesis using symbolic notation?

h o = μ c < μ o
h o = μ c ≤ μ o
h o = μ c > μ o
h o = μ c ≥ μ o