Title: Analysis of Exercise 12 and 18 from Chapter 4 of “Fundamental Statistics for the Social and Behavioral Sciences”

Textbook: Tokunaga, H. (2019). Fundamental Statistics for the Social and Behavioral Sciences (2nd ed.). Thousand Oaks, CA: Sage Publications, Inc
Complete and discuss your finding for exercise number 12 and exercise number 18 in your textbook. They are at the end of chapter 4, listed under 4.15 Exercises, on page 111 in the textbook. 
#12 – 50 points
#18 – 50 points