Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

Problem 1: The dataset textmessages.csv contains variables measured from a survey conducted of Harvard students enrolled in a recent Statistics class: female: an indicator variable

Problem 1:

The dataset "textmessages.csv" contains variables measured from a survey conducted of Harvard students enrolled in a recent Statistics class:

  • female: an indicator variable which is 1 for females and 0 for males;
  • underclassman: an indicator variable which takes on the value 1 for a freshman or a sophomore, or 0 for a junior, senior, or a grad student; and
  • texts: a variable that measures the number of text messages the respondent says he or she sends in a typical day.

A researcher wants to investigate whether male students send less text messages than female students.All the below computations must be conducted in R-studio. T

6. From Problem 1:Graphically investigate the assumption of Normality in the "response"variable to compare these groups (attach graphs in pdf file). Report the Anderson-Darling normality "A" test for Male.

7. From Problem 1:Report the Anderson-Darling normality "A" test for Female.

8. From Problem 1: What is your conclusion about the normality test for both genders (Reject/not reject)

  1. From Problem 1: Perform an appropriate transformation to make the Normality assumption more valid. Be sure to include important graphs comparing these 2 groups (graphs to be attached in the pdf file). Report the mean of the transformed variable for Male and Female.

9. From Problem 1: Performan appropriate t-test using the transformed variable to address the investigator's research question regarding gender. Report the p-value.

10. From Problem 1:Explain briefly your conclusion. Include the effect of gender after transformation on the response variable (if any).

https://drive.google.com/file/d/12t-Mdz9X3snBfAntFqMen5ZLQhpH3Q94/view?usp=sharing

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Personal Tutor For Serways Essentials Of College Physics,

Authors: Raymond A Serway, Chris Vuille

1st Edition

0495171646, 9780495171645

More Books

Students also viewed these Mathematics questions