Solutions Probability

A test consists of 10 true/false questions. To pass the test a student must answer at least 6 questi

Question: A test consists of 10 true/false questions. To pass the test a student must answer at least 6 questions correctly. If a student guesses on each question, what is the probability that the student will pass the test?

Binomial Probability

Num Trials, n;	10		Evaluate
Success Prob, p	0.5

Mean:	2.2000
St Dev:	1.3266
Variance:	1.7600

x	P(x)	P(x or fewer)	P(x or greater)
0	0.0009766	0.0009766	1.0000000
1	0.0097656	0.0107422	0.9990234
2	0.0439453	0.0546875	0.9892578
3	0.1171875	0.1718750	0.9453125
4	0.2050781	0.3769531	0.8281250
5	0.2460938	0.6230469	0.6230469
6	0.2050781	0.8281250	0.3769531
7	0.1171875	0.9453125	0.1718750
8	0.0439453	0.9892578	0.0546875
9	0.0097656	0.9990234	0.0107422
10	0.0009766	1.0000000	0.0009766