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## A dump of our free Chat sessions, in case it is useful. It excludes white boards used during paid sessions.

tutor3 : Hello Student, May I help you with your Math problems?
student : How about a statistical question?
tutor3 : yes go ahead
tutor3 : Please note, due to lack of resources, we can only do 1 problem FREE in 24 hours period. You can always come back tomorrow for another free problem. Please, tell your friends about our free service - 1 free in 24 hours
student : The student in Question 5 from Module 18 decides to conduct the same study using a within-participants design in order to control for differences in cognitive ability. He selects a random sample of participants and has them study different material of equal difficulty in both the music and no music conditions. The data appear below. As before, they are measured on an interval-ratio scale and are normally distributed.
Music No Music
6 10
7 7
6 8
5 7
6 7
8 9
8 8
a. What statistical test should be used to analyze these data?
b. Identify Ho and Ha for this study.
c. Conduct the appropriate analysis.
d. Should Ho be rejected? What should the researcher conclude?
e. If significant, compute the effect size and interpret.
f. If significant, draw a graph representing the data.

student : I am looking for guidance on all questions.
tutor3 : you should conduct a t-test since the data given is normally distributed and it supports the assumptions of t-test to analyse the data
tutor3 : sory i can answer only subpart a) cos Please note, due to lack of resources, we can only do 1 problem FREE in 24 hours period. You can always come back tomorrow for another free problem. Please, tell your friends about our free service - 1 free in 24 hours
tutor3 : Fax your homework to 206-339-8302. or, email to *****@aafter.com. Include your email and phone number.
student : Ok, will do. I have a friend who is finishing his MBA and we were trying to help one another through stats but the class is going so fast and hard to remember what tests work for what data. I will send the website info over to him as well. Thanks
tutor3 : welcome

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