63.

a. Show that b(x; n, 1  p)
b(n  x; n, p).

b. Show that B(x; n, 1  p)
1  B(n  x  1; n, p).

[Hint: At most x S’s is equivalent to at least (n  x) F’s.]

c. What do parts

(a) and

(b) imply about the necessity of including values of p greater than .5 in Appendix Table A.1?