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Assume that random guesses are made for6multiple-choice questions on a test with5 choices for eachquestion, so that there are n=6trials, each with probability of success(correct)
Assume that random guesses are made for6multiple-choice questions on a test with5 choices for eachquestion, so that there are n=6trials, each with probability of success(correct) given by p=0.20.
Find the probability of no correct answers.
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Part 1
The probability of no correct answers is
enter your response here.
(Round to three decimal places asneeded.)
Binomial Probabilities | ||||||||||||||||
p | ||||||||||||||||
n | x | 0.01 | 0.05 | 0.1 | 0.2 | 0.3 | 0.4 | 0.5 | 0.6 | 0.7 | 0.8 | 0.9 | 0.95 | 0.99 | x | n |
2 | 0 | 0.98 | 0.902 | 0.81 | 0.64 | 0.49 | 0.36 | 0.25 | 0.16 | 0.09 | 0.04 | 0.01 | 0.002 | 0+ | 0 | 2 |
1 | 0.02 | 0.095 | 0.18 | 0.32 | 0.42 | 0.48 | 0.5 | 0.48 | 0.42 | 0.32 | 0.18 | 0.095 | 0.02 | 1 | ||
2 | 0+ | 0.002 | 0.01 | 0.04 | 0.09 | 0.16 | 0.25 | 0.36 | 0.49 | 0.64 | 0.81 | 0.902 | 0.98 | 2 | ||
3 | 0 | 0.97 | 0.857 | 0.729 | 0.512 | 0.343 | 0.216 | 0.125 | 0.064 | 0.027 | 0.008 | 0.001 | 0+ | 0+ | 0 | 3 |
1 | 0.029 | 0.135 | 0.243 | 0.384 | 0.441 | 0.432 | 0.375 | 0.288 | 0.189 | 0.096 | 0.027 | 0.007 | 0+ | 1 | ||
2 | 0+ | 0.007 | 0.027 | 0.096 | 0.189 | 0.288 | 0.375 | 0.432 | 0.441 | 0.384 | 0.243 | 0.135 | 0.029 | 2 | ||
3 | 0+ | 0+ | 0.001 | 0.008 | 0.027 | 0.064 | 0.125 | 0.216 | 0.343 | 0.512 | 0.729 | 0.857 | 0.97 | 3 | ||
4 | 0 | 0.961 | 0.815 | 0.656 | 0.41 | 0.24 | 0.13 | 0.062 | 0.026 | 0.008 | 0.002 | 0+ | 0+ | 0+ | 0 | 4 |
1 | 0.039 | 0.171 | 0.292 | 0.41 | 0.412 | 0.346 | 0.25 | 0.154 | 0.076 | 0.026 | 0.004 | 0+ | 0+ | 1 | ||
2 | 0.001 | 0.014 | 0.049 | 0.154 | 0.265 | 0.346 | 0.375 | 0.346 | 0.265 | 0.154 | 0.049 | 0.014 | 0.001 | 2 | ||
3 | 0+ | 0+ | 0.004 | 0.026 | 0.076 | 0.154 | 0.25 | 0.346 | 0.412 | 0.41 | 0.292 | 0.171 | 0.039 | 3 | ||
4 | 0+ | 0+ | 0+ | 0.002 | 0.008 | 0.026 | 0.062 | 0.13 | 0.24 | 0.41 | 0.656 | 0.815 | 0.961 | 4 | ||
5 | 0 | 0.951 | 0.774 | 0.59 | 0.328 | 0.168 | 0.078 | 0.031 | 0.01 | 0.002 | 0+ | 0+ | 0+ | 0+ | 0 | 5 |
1 | 0.048 | 0.204 | 0.328 | 0.41 | 0.36 | 0.259 | 0.156 | 0.077 | 0.028 | 0.006 | 0+ | 0+ | 0+ | 1 | ||
2 | 0.001 | 0.021 | 0.073 | 0.205 | 0.309 | 0.346 | 0.312 | 0.23 | 0.132 | 0.051 | 0.008 | 0.001 | 0+ | 2 | ||
3 | 0+ | 0.001 | 0.008 | 0.051 | 0.132 | 0.23 | 0.312 | 0.346 | 0.309 | 0.205 | 0.073 | 0.021 | 0.001 | 3 | ||
4 | 0+ | 0+ | 0+ | 0.006 | 0.028 | 0.077 | 0.156 | 0.259 | 0.36 | 0.41 | 0.328 | 0.204 | 0.048 | 4 | ||
5 | 0+ | 0+ | 0+ | 0+ | 0.002 | 0.01 | 0.031 | 0.078 | 0.168 | 0.328 | 0.59 | 0.774 | 0.951 | 5 | ||
6 | 0 | 0.941 | 0.735 | 0.531 | 0.262 | 0.118 | 0.047 | 0.016 | 0.004 | 0.001 | 0+ | 0+ | 0+ | 0+ | 0 | 6 |
1 | 0.057 | 0.232 | 0.354 | 0.393 | 0.303 | 0.187 | 0.094 | 0.037 | 0.01 | 0.002 | 0+ | 0+ | 0+ | 1 | ||
2 | 0.001 | 0.031 | 0.098 | 0.246 | 0.324 | 0.311 | 0.234 | 0.138 | 0.06 | 0.015 | 0.001 | 0+ | 0+ | 2 | ||
3 | 0+ | 0.002 | 0.015 | 0.082 | 0.185 | 0.276 | 0.312 | 0.276 | 0.185 | 0.082 | 0.015 | 0.002 | 0+ | 3 | ||
4 | 0+ | 0+ | 0.001 | 0.015 | 0.06 | 0.138 | 0.234 | 0.311 | 0.324 | 0.246 | 0.098 | 0.031 | 0.001 | 4 | ||
5 | 0+ | 0+ | 0+ | 0.002 | 0.01 | 0.037 | 0.094 | 0.187 | 0.303 | 0.393 | 0.354 | 0.232 | 0.057 | 5 | ||
6 | 0+ | 0+ | 0+ | 0+ | 0.001 | 0.004 | 0.016 | 0.047 | 0.118 | 0.262 | 0.531 | 0.735 | 0.941 | 6 | ||
7 | 0 | 0.932 | 0.698 | 0.478 | 0.21 | 0.082 | 0.028 | 0.008 | 0.002 | 0+ | 0+ | 0+ | 0+ | 0+ | 0 | 7 |
1 | 0.066 | 0.257 | 0.372 | 0.367 | 0.247 | 0.131 | 0.055 | 0.017 | 0.004 | 0+ | 0+ | 0+ | 0+ | 1 | ||
2 | 0.002 | 0.041 | 0.124 | 0.275 | 0.318 | 0.261 | 0.164 | 0.077 | 0.025 | 0.004 | 0+ | 0+ | 0+ | 2 | ||
3 | 0+ | 0.004 | 0.023 | 0.115 | 0.227 | 0.29 | 0.273 | 0.194 | 0.097 | 0.029 | 0.003 | 0+ | 0+ | 3 | ||
4 | 0+ | 0+ | 0.003 | 0.029 | 0.097 | 0.194 | 0.273 | 0.29 | 0.227 | 0.115 | 0.023 | 0.004 | 0+ | 4 | ||
5 | 0+ | 0+ | 0+ | 0.004 | 0.025 | 0.077 | 0.164 | 0.261 | 0.318 | 0.275 | 0.124 | 0.041 | 0.002 | 5 | ||
6 | 0+ | 0+ | 0+ | 0+ | 0.004 | 0.017 | 0.055 | 0.131 | 0.247 | 0.367 | 0.372 | 0.257 | 0.066 | 6 | ||
7 | 0+ | 0+ | 0+ | 0+ | 0+ | 0.002 | 0.008 | 0.028 | 0.082 | 0.21 | 0.478 | 0.698 | 0.932 | 7 | ||
8 | 0 | 0.923 | 0.663 | 0.43 | 0.168 | 0.058 | 0.017 | 0.004 | 0.001 | 0+ | 0+ | 0+ | 0+ | 0+ | 0 | 8 |
1 | 0.075 | 0.279 | 0.383 | 0.336 | 0.198 | 0.09 | 0.031 | 0.008 | 0.001 | 0+ | 0+ | 0+ | 0+ | 1 | ||
2 | 0.003 | 0.051 | 0.149 | 0.294 | 0.296 | 0.209 | 0.109 | 0.041 | 0.01 | 0.001 | 0+ | 0+ | 0+ | 2 | ||
3 | 0+ | 0.005 | 0.033 | 0.147 | 0.254 | 0.279 | 0.219 | 0.124 | 0.047 | 0.009 | 0+ | 0+ | 0+ | 3 | ||
4 | 0+ | 0+ | 0.005 | 0.046 | 0.136 | 0.232 | 0.273 | 0.232 | 0.136 | 0.046 | 0.005 | 0+ | 0+ | 4 | ||
5 | 0+ | 0+ | 0+ | 0.009 | 0.047 | 0.124 | 0.219 | 0.279 | 0.254 | 0.147 | 0.033 | 0.005 | 0+ | 5 | ||
6 | 0+ | 0+ | 0+ | 0.001 | 0.01 | 0.041 | 0.109 | 0.209 | 0.296 | 0.294 | 0.149 | 0.051 | 0.003 | 6 | ||
7 | 0+ | 0+ | 0+ | 0+ | 0.001 | 0.008 | 0.031 | 0.09 | 0.198 | 0.336 | 0.383 | 0.279 | 0.075 | 7 | ||
8 | 0+ | 0+ | 0+ | 0+ | 0+ | 0.001 | 0.004 | 0.017 | 0.058 | 0.168 | 0.43 | 0.663 | 0.923 | 8 | ||
n | x | 0.01 | 0.05 | 0.1 | 0.2 | 0.3 | 0.4 | 0.5 | 0.6 | 0.7 | 0.8 | 0.9 | 0.95 | 0.99 | x | n |
p | ||||||||||||||||
NOTE: 0+ represents a positive probability less than 0.0005. |
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