10. Which of the following statements about continuous random variables and continuous probability distributions is/are TRUE?
I. The probability that a continuous random variable takes a specific value is 0.
II. The probability that a continuous random variable takes a negative value is 0.
III. The probability that any uniformly distributed random variable takes a value less than its mean is 0.5.
IV. The probability that a normally distributed random variable takes a value less than its mean is 0.5.
Which one???
I, III, and IV
I, II, and IV
All of the above
None of the above
11. Suppose a 10-question true/false test is administered to all students. The students have a maximum of 60 minutes to complete the test, and all students are equally able to complete the test in any amount of time. Let X be the amount of time taken by a student to complete the test. What distribution does X follow?
A binomial distribution
A uniform distribution
A normal distribution
An exponential distribution