Suppose a random variable, x, has a uniform distribution with a=5 and b=9. a. Calculate P(6.5≤x≤8). b. Determine P(x>7). c. Compute the mean, μ, and the standard deviation, σ, of this random variable. d. Determine the probability that x is in the interval (μ±3σ). a. P(6.5≤x≤8)= (Simplify your answer.)