Solution to Pitman problem 2.5.2
26 25 . The easiest way to compute this value is just to draw the tree; RBB
51 50
(26)
2
is one branch. You could also compute it as 26 51 , and you get the same answer. Or,
52 ( )
2
you could get it as
26 26
11 2
3 532 .
Solutions to Suggested Problems from Section 1.3
1.3.1 Lets say p is the proportion that my neighbor gets. Then my friend gets 2p, so I get 4p.
We know p + 2p + 4p = 1, so my part is 4p = 4/7.
1.3.3 Let = cfw_1, 2, . . . , 500. Then the sets represented i
Solutions to Suggested Problems from Section 1.1
1.1.2 Its easier to read the data o this table:
word
suppose
a
word
is
picked
at
random
f rom
this
sentence
# letters
7
1
4
2
6
2
6
4
4
8
(a) 7 out of 10 words have at least 4 letters,
(b) 4 out of 10 conta