1. Dr. Anna N. Elsa is developing an intervention to help her anxious patients Let It Go. She randomly assigns 33 anxious individuals to three conditions: therapy alone (treatment A), the control...

1 answer below »
I don't need the R code for the questions.


1. Dr. Anna N. Elsa is developing an intervention to help her anxious patients Let It Go. She randomly assigns 33 anxious individuals to three conditions: therapy alone (treatment A), the control group), therapy + meditation (treatment B), or therapy + meditation + yoga (treatment C). After completion of the treatment, she measures the participants’ level of anxiety. The data, HDFS881_ anxiety.xlsx, is on D2L. Run the appropriate analysis and write a brief results section. Be sure to include appropriate descriptive statistics and an examination of assumptions. 2. Dr. Autumn O. Beal is examining what impacts the efficiency of various cars. She collects data on horsepower, weight of the car, and the car’s acceleration, in addition to the cars’ efficiency as measured in miles per gallon. The data, HDFS881_cars.xlsx, is on D2L. Run the appropriate analysis and write a brief results section. Assume your readers know very little about cars, and would therefore not understand the units of any of the variables in the dataset. Be sure to include appropriate graphs and an examination of assumptions. [This is real data of cars from the 70s and early 80s. Take a moment to admire how much more efficient cars are today; the average mpg is now about 26 mpg even with the rise of SUVs and pickup trucks.] 3. You all know the idea, right: the red shirt is the character that is going to die. If you aren’t familiar, check out https://en.wikipedia.org/wiki/Redshirt_(stock_character). There is real data on this (it is not more dangerous to wear a red shirt), but I made up different data. The data, HDFS881_shirts. Run the appropriate analysis and write a brief results section. Be sure to include the appropriate table and an examination of assumptions.
Answered 1 days AfterApr 26, 2021

Answer To: 1. Dr. Anna N. Elsa is developing an intervention to help her anxious patients Let It Go. She...

Suraj answered on Apr 28 2021
156 Votes
Solution 1:
In this experiment the experimenter doing an experiment by applying three different types of treat
ment on the 33 anxious patients. The three treatments are therapy alone (treatment A), control group), therapy + meditation (treatment B), or therapy + meditation + yoga (treatment C).
There are two independent variables in the data and those are sex and type of treatment. The dependent variable is anxiety level. Thus, a two-way ANOVA with interaction effect is conducted so see the effect of treatments, sex, and their mixed effect. The analysis is conducted using the R studio. The descriptive statistics are given as follows:
For anxiety variable,
Min. 1st Qu. Median Mean 3rd Qu. Max.
2.13 6.98 7.84 8.53 9.81 16.60
Mean: 8.53 and the standard deviation is 3.25.
The model output is given as follows:
Analysis of Variance Table
Response: anxiety
Df Sum Sq Mean Sq F value Pr(>F)
treatment 2 99.517 49.758 8.5356 0.001341 **
ï..gender 1 50.235 ...
SOLUTION.PDF

Answer To This Question Is Available To Download

Related Questions & Answers

More Questions »

Submit New Assignment

Copy and Paste Your Assignment Here