Question

Binomial
n	25
p	0.39
xi	P(X<=xi)
0	0.0000
1	0.0001
2	0.0006
3	0.0032
4	0.0123
5	0.0367
6	0.0886
7	0.1789
8	0.3086
9	0.4653
10	0.6257
11	0.7654
12	0.8697
13	0.9363
14	0.9729
15	0.9900
16	0.9968
17	0.9992
18	0.9998
19	1.0000
20	1.0000
21	1.0000
22	1.0000
23	1.0000
24	1.0000
25	1.0000

Use the cumulative binomial probability excel output above (dealing with the number of Americans who are satisfied with the way things are going in the U.S.) to answer the following question. (See exercise 42 on page 253 in your textbook for similar problem.)

Find the probability that at least 13 Americans are not satisfied with the way things are going.

Answer 1