Determine the critical region and critical value(s) that would be used to test the following using the classical approach:

a. Ho :  0.5 and Ha:   0.5, with n  18 and

  0.05

b. Ho : 2 8.5 and Ha: 2  8.5, with n  15 and

  0.01

c. Ho :  20.3 and Ha:   20.3, with n  10 and

  0.10

d. Ho : 2 0.05 and Ha: 2  0.05, with n  8 and   0.02

e. Ho :  0.5 and Ha:   0.5, with n  12 and

  0.10