A kindergarten teacher wanted to see if her students' social skills changed over the academic year. She compared the scores on a standardized measure of social skills at the beginning of the year, and the end of the year. The results follow:

a. What is the null hypothesis?
b. Is a one or two-tailed test more appropriate?
c. Calculate t .
d. Write a sentence explaining the results.

Question

A kindergarten teacher wanted to see if her students' social skills changed over the academic year. She compared the scores on a standardized measure of social skills at the beginning of the year, and the end of the year. The results follow: 
  
a. What is the null hypothesis? 
b. Is a one or two-tailed test more appropriate? 
c. Calculate t . 
d. Write a sentence explaining the results.

Quizplus · Accepted Answer

The Answer of A kindergarten teacher wanted to see if her students' social skills changed over the academic year. She compared the scores on a standardized measure of social skills at the beginning of the year, and the end of the year. The results follow: 
  
a. What is the null hypothesis? 
b. Is a one or two-tailed test more appropriate? 
c. Calculate t . 
d. Write a sentence explaining the results.

A Kindergarten Teacher Wanted to See If Her Students' Social