A biopsychologist is studying the role of the role of marijuana (THC) on aggression inrats. Specifically, the researcher asserts that the influence of large doses of marijuanawill make rats more aggressive. Twenty two rats are randomly assigned to one of twogroups. The active ingredient in marijuana is called delta-9 THC. One group of 11 ratsserves as a control group and receives a placebo (via injection). A second group of 11different rats receives a large dose of delta-9 THC via injection. These rats have notbeen paired up on any trait. Then the researcher tests the animals by recording thenumber of aggressive responses each of the rats display in a 30 minute test periodone hour after the rats were injected. The data are presented below, and representthe number of aggressive responses per rat in each group.X₁Large dose of delta-9THC Group171518142011152018X₂ PlaceboGrouple H...91211121512101914 191214910With a = .05, summarize the results of the hypothesis testing procedure by puttingyour results in journal form. Ignore the minus sign if your calculated t is negative.Ot (10)-4.11, p < .05t(11)-4.11, p < .05t (20) = 3.13, p <.05Ot (22)-2.94, p <.05Ot (20) = 1.76, p >.05Ot (22)-2.93, p < .05

Null Hypothesis: H0: The mean number of aggressive responses per rat in the both groups are equal.…

Answered: A biopsychologist is studying the role…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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You are interested in testing if there is a difference in weight-loss between 3 popular diet types; low calorie, low fat and low carb. Participants are randomly assigned one of the three groups or a control group. The control group will be told that are participating in a weight-loss study, but will not be following any particular diet. This is to study the placebo effect, weight-loss from just participating in the study. At the start of the study, each participant's weight is recorded in pounds. After 8 weeks they are weighed again, and the weight difference is recorded. A positive value represents a weight loss while a negative value represents a weight gain. Test at 10% significance. Round answers to 3 decimal places. Diet Type Low Calorie Low Calorie Low Calorie Low Calorie Low Calorie Low Fat Low Fat Low Fat Low Fat Low Fat Low Carb Low Carb Low Carb Low Carb Low Carb Control Control Control Control Control Pounds Lost 5.3 6.6 10.5 6.4 8.9 5 4 0.2 2.9 2.6 4.6 2.9 0.8 2.4 2.5 1.9…
A pharmaceutical company is testing the effectiveness of its vaccine across two different age brackets. They take a sample and split the participants up into two separate groups. Group A consists of 44 people who are between ages 13 and 18. Group B consists of 58 people between ages 19 and 26. After being administered the vaccine, it was found that 37 people from group A were immune to the virus and 42 people from group B were immune. What proportion of people from Group A were immune? What proportion of people from Group B were immune? What proportion of people in this study were immune?
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