Determine the level of significance, test statistic, critical region, and critical values(s)

that would be used in completing each hypothesis test using the classical approach with   0.05.

a. Ho :   43 vs. Ha:   43,   6

b. Ho :   95 vs. Ha:   95,  unknown, n  22

c. Ho : p  0.80 vs. Ha: p  0.80

d. Ho :   12 vs. Ha:   12, n  28