Answer:
281.25 miles
Step-by-step explanation:
2=250
1=125
0.5=62.5
0.25=31.25
250+31.25=281.25
Answer:
0.4286 or 42.86%
Step-by-step explanation:
The probability that an athlete has used drugs and tests positive is given by the probability that he had been using drugs (4%) multiplied by the probability of a true positive (1 - false negative):
![P(D\ and\ +) = 0.04*(1-0.10)=0.036](https://tex.z-dn.net/?f=P%28D%5C%20and%5C%20%2B%29%20%3D%200.04%2A%281-0.10%29%3D0.036)
The probability that an athlete has NOT used drugs and tests positive is given by the probability that he had not been using drugs (100% - 4%) multiplied by the probability of a false positive (5%):
![P(N\ and\ +) = (1-0.04)*0.05=0.048](https://tex.z-dn.net/?f=P%28N%5C%20and%5C%20%2B%29%20%3D%20%281-0.04%29%2A0.05%3D0.048)
Finally, the probability that the prohibited drug has been used given that an athlete tested positive is:
![P(D|+)=\frac{P(D\ and\ +)}{P(D\ and\ +) \ +\ P(N\ and\ +)} \\P(D|+)=\frac{0.036}{0.036+0.048}=0.4286](https://tex.z-dn.net/?f=P%28D%7C%2B%29%3D%5Cfrac%7BP%28D%5C%20and%5C%20%2B%29%7D%7BP%28D%5C%20and%5C%20%2B%29%20%5C%20%2B%5C%20P%28N%5C%20and%5C%20%2B%29%7D%20%5C%5CP%28D%7C%2B%29%3D%5Cfrac%7B0.036%7D%7B0.036%2B0.048%7D%3D0.4286)
The probability is 0.4286 or 42.86%.
Since the order of choosing out students to hand out papers doesnt matter because the paper handed is just the same and that the purpose or task of each student is just the same, combination should be used. Otherwise, when the order is based on ranking of students for example, permutation is used. answer is true
Answer:
0.274855yd
Step-by-step explanation: