Let Y denote the monthly stipend (in hundreds of dollars) of a randomly selected graduate student receiving a fellowship. Suppose Y follows a uniform distribution on the interval [500,500 +0], where > 0. The probability density function is given by: f(y; 0) = {1/0, 500 ≤ y ≤ 500+ 0 otherwise A random sample of n students is collected, Y₁, Y2,, Y. (a) Use the method of moments to obtain an estimator of 0, denoted Ô. (b) Compute E(). Is Ô an unbiased estimator for ?
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- let X denotes the percentage of time out of a 40-hour workweek that a call center agent is directly serving a client by answering phone calls. Suppose that X has a probability density function defined by f(x) =3x² for 0 ≤ x ≤ 1. Find the mean and variance of X. Interpret the results.c) The variance of Y,The probability density of the random variable Z isgiven by f(z) = kze−z2for z > 00 for z F 0Find k and draw the graph of this probability density.
- Delta Airlines quotes a flight time of 4 hours, 5 minutes for a particular flight. Suppose we believe that actual flight times are uniformly distributed between 4 hours and 4 hours, 20 minutes. (a) Show the graph of the probability density function for flight time. The graph has a shaded area. The horizontal axis is labeled: x with the title: Flight Time in Minutes and has tickmarks labeled: 230, 240, 250, 260. The vertical axis is labeled: f(x), and has tickmarks labeled: 1/20, 1/10, 3/20. The shaded area is the region bounded by the horizontal axis and the following line segments. A 1/20 unit long vertical line segment begins at 230 on the horizontal axis. A 1/20 unit long vertical line segment begins at 250 on the horizontal axis. A 20 unit long horizontal line segment begins at the tickmark labeled 230 on the horizontal axis and the tickmark labeled 1/20 on the vertical axis. This line segment connects the two vertical line segments. The graph has a shaded area. The…18.) As a measure of intelligence, mice are timed when going through a maze to reach a reward of food. The time (in seconds) required for any mouse is a random variable Y with a probability density function given by fy(y) = y² -& y ≥ b elsewhere where b is the minimum possible time needed to traverse the maze. What is the cumulative distribution function for Y?Let X1,., X, denote a random sample from the probability density function f(r) = 0xº-1, 0 0. Show that X is a consistent estimator of .
- The continuous random variable X has the probability density function (pdf) given by: (k - 5+x f(x)=- 5Suppose X is a random variable taking values in the interval [0,2] with probability density function f(x) = 1-x/2. What is the variance of X?Determine f(2) so that the given function can serve as a probability distribution of the discrete random variable X: f(x) = k(x² + 4), for x = 0, 1, 2, 3. Use 4 decimal places.The function f(x) is the probability density function, that describes the random variable travel time X. f(x) = {xe®, x>0 0, X ≤0 a.) What is the probability that the travel time is less than 2.5 hours? b.) What is the probability that the travel time is between 1 to 2.5 hours? c.) Find the mean and variance of the given probability density functionThe random variable x is known to be uniformly distributed between 10 and 20. (a) Show the graph of the probability density function. The graph has a shaded area. The horizontal axis is labeled: x, and has tickmarks labeled: 10, 20, 30, 40, 50. The vertical axis is labeled: f(x), and has tickmarks labeled: 0.05, 0.1, 0.15, 0.2. The shaded area is the region bounded by the horizontal axis and the following line segments. A 0.1 unit long vertical line segment begins at 30 on the horizontal axis. A 0.1 unit long vertical line segment begins at 40 on the horizontal axis. A 10 unit long horizontal line segment begins above the horizontal axis tickmark labeled 30 and to the right of the tickmark labeled 0.1 on the vertical axis. This line segment connects the two vertical line segments. The graph has a shaded area. The horizontal axis is labeled: x, and has tickmarks labeled: 10, 20, 30, 40, 50. The vertical axis is labeled: f(x), and has tickmarks labeled: 0.05, 0.1, 0.15,….SEE MORE QUESTIONS