1. Based on the given data calculate the probability that selected at random student is a girl...
Question:
1. Based on the given data calculate the probability that selected at random student is a girl OR student likes soccer. See tip for previous problem.
a) 9/80
b) 8/9
c) 9/16
d) 8/15
2. Find probability of 5 successes (x = 5) in 10 trials (n = 10), if probability of success in each trial is p = 0.4. Use Appendix Table for Binomial distribution.
a) 0.431
b) 0.326
c) 0.201
d) 0.108
3. Use Appendix table for Binomial distribution to find probability for n = 4, p = 0.6 and x
a) 0.526
b) 0.431
c) 0.355
d) 0.218
4. Quiz has six questions (n = 6). Each question has 5 possible answers and only one is correct (probability of success = 1/5 = 0.2). If a student randomly guesses on all six questions, what is the probability to answer 2 questions right (x = 2)? Use Appendix table for Binomial distribution.
a) 0.124
b) 0.438
c) 0.328
d) 0.246
5. A fair coin flipped 9 times. Use Appendix Table A for Binomial distribution to find the probability that it lands on heads more than 5 times (5 is not included).
First, figure out what is n, p, x for this case, then use Appendix Table to find each probability, then add them together.
a) 0.500
b) 0.254
c) 0.121
d) 0.042