Statistics Solutions

(Step-by-Step) You investigate whether the older or younger male in pairs of brothers tends to be more extroverted. You obtain the following extroversion

Question: You investigate whether the older or younger male in pairs of brothers tends to be more extroverted. You obtain the following extroversion scores:

Sample 1 (Younger) Sample 2 (Older)
10 18

11 17

18 19

12 16

15 15

13 19

19 13

15 20



  1. What is the null hypothesis and alternative hypothesis?
    b) Compute obtained value in t-test
    c) With the theoretical probability of a type 1 error= .05, what is the critical value of t-test?
    d) What should you conclude about this relationship?
    e) Which of our approaches should we use to determine if this is a scientifically important relationship?
    Price: $2.99
    Solution: The downloadable solution consists of 3 pages
    Deliverable: Word Document


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