True or false

1. True/False 1. The time until a projectile return to earth is best modeled by a discrete random variable. 2. The probability distribution of a random variable X is a description of the probabilities associated with the possible value of X. 3. The cumulative distribution function of a discrete random variable X Equals P(X=x). 4 The individual events in the binominal distribution are not independent. 5. the discrete events in the discrete uniform distribution are random. 6. The probability of individual events in the binominal distribution is not constant. 7. The mean and variance of the Poisson distribution are equal. 8. The cumulative distribution function of a discrete random variable is the sum of all of the probabilities that are less than or equal to x, where x is a specific value of the discrete random variable X. 9. A cumulative distribution function can be used to nd the probability mass function of a discrete random variable. 10. The mean of a discrete random variable is its expected value