Question

A researcher conducted an experiment to see if specific eye exercises can improve peripheral vision. A random sample of 5 people were rated for peripheral vision on a scale from 1 to 20, where 9 is considered average and higher scores indicate better peripheral vision. Then they followed the prescribed eye exercise program and were rated again. The results follow below. Subject 1 2 3 4 5 Before 9 8 7 10 6 After 10 9 11 12 9 Test the hypothesis that the exercises improved peripheral vision. Use a 5% significance level. a. List the null and alternate hypotheses in terms of the appropriate population parameter using =, <, or >. b. Find the critical value(s) which determine(s) the rejection and acceptance regions. c. Compute the relevant test statistic and the P-value. d. Draw a conclusion. Do you reject the null hypothesis or not?

          A researcher conducted an experiment to see if specific eye
exercises can improve peripheral vision.  A random sample of 5
people were rated for peripheral vision on a scale from 1 to 20,
where 9 is considered average and higher scores indicate better
peripheral vision.  Then they followed the prescribed eye
exercise program and were rated again.  The results follow
below. 
Subject
1
2
3
4
5
Before
9
8
7
10
6
After
10
9
11
12
9
Test the hypothesis that the exercises improved peripheral
vision.  Use a 5% significance level.
a.  List the null and alternate hypotheses in terms of the
appropriate population parameter using =, <, or >.
b.  Find the critical value(s) which determine(s) the
rejection and acceptance regions.
c.  Compute the relevant test statistic and the
P-value.
d.  Draw a conclusion.  Do you reject the null
hypothesis or not?

Added by Jacob S.

Question

Please give Ace some feedback