Aresearcher conducts an independent-measures study examining how the brain chemical serotonin is related to aggression. one sample of rats serves as a control group and receives a placebo that does not affect normal levels of serotonin. a second sample of rats receives a drug that lowers brain levels of serotonin. then the researcher tests the animals by recording the number of aggressive responses each of the rats display. the data are as follows.

control low serotonin

n = 10 n = 15

m = 14 m = 19

ss = 180.5 ss = 130.0

a. does the drug have a significant effect on aggression? use an alpha level of .05, two

tails.

b. compute cohen

answer: a. 74

step-by-step explanation:

it shows divided evenly, so add the 37+37 = 74

21

step-by-step explanation:

you have to wait a while to reward brainliest if only one person answers. if 2 people answer there should be a "mark brainliest" on their question.

i cant fully remember all of the ranks, here are the ones i remember.

hand, ambitous, ace, genius.

chemists are often responsible for designing a chemical reaction and analyzing the products obtained from it. one significant part of designing a chemical reaction is determining the amount of each reactant that is needed and the amount of each product that will be produced. in order to do so, chemists use stoichiometry, the quantitative relationships between reactants and products.