For the following probability distribution x fx) 0 0.01 0.02 0.10 0.35 4 0.20 0.18 0.06...
. Then use the sampling Consider the population described by the probability distribution shown in the table. The random variable x is observed twice. Find E(X) distribution of x to find the expected value of x BI! Click the icon to view the table. i More Info Find E(X) Etx) (Round to the nearest tenth as needed.) Find the expected value of using the sampling distribution of E(X)- (Round to the nearest tenth as needed.) 0.2 2.5 0.12 3 0.19...
. Then use the sampling Consider the population described by the probability distribution shown in the table. The random variable x is observed twice. Find E(X) distribution of x to find the expected value of x BI! Click the icon to view the table. i More Info Find E(X) Etx) (Round to the nearest tenth as needed.) Find the expected value of using the sampling distribution of E(X)- (Round to the nearest tenth as needed.) 0.2 2.5 0.12 3 0.19...
Given the following joint distribution of two random variables X and Y (a) Compute marginal distribution PX(x) (b) Compute marginal distribution PY(y) (c) What is the conditional probability P(Y | X = 2)? 20.10 0.05 0.15 0.10 0.10 4 0.04 0.02 0.06 0.04 0.04 6 0.04 0.02 0.06 0.06 0.02 8 0.02 0.01 0.03 0 0.04
You are given the probability distribution below: x 0 1 2 3 4 p(x) 0.05 0.35 0.25 0.20 0.15 Determine the standard deviation of X. Report your answer to three decimal places.
Find the mean of the following probability distribution? 1 0.20 2 0.10 3 0.35 4 0.05 5 0.30 Place your answer, rounded to two decimal places, in the blank. When entering your answer do not use any labels or symbols other than a decimal point. Simply provide the numerical value. For example, 1.23 would be a legitimate entry
Problem 5 Consider the following probability distribution. 0 1 2 3 4 5 6 7 fx (2) | 0.18 0.08 0.01 0.23 0.08 0.09 0.24 0.09 What is the mathematical expectation for U(x) = x2? 3.63 18.77 5.59 17.77
Question 4: Let X and Y be two discrete random variables with the following joint probability distribution (mass) function Pxy(x, y): a) Complete the following probability table: Y 2 f(x)=P(X=x) 1 3 4 0 0 0.08 0.06 0.05 0.02 0.07 0.08 0.06 0.12 0.05 0.03 0.06 0.05 0.04 0.03 0.01 0.02 0.03 0.04 2 3 foy)=P(Y=y) 0.03 b) What is P(X s 2 and YS 3)? c) Find the marginal probability distribution (mass) function of X; [f(x)]. d) Find the...
QUESTION 22 For a probability distribution, determine the standard deviation. 0 0.25 1 0.35 2 0.10 3 0.30 OA 1.45 OB1.12 OC 1.29 OD.1.16 QUESTION 23 Copy of For a probability distribution, determine the standard deviation. 0 0.25 1 0.35 2 0.10 3 0.30 OA 1.45 ° B. 1.12 Oc, 1.16 OD 1.29
X = number of books Probability 1 0.05 2 0.10 3 0.20 4 0.35 5 0.10 6 0.15 7 0.05 13. For this problem, look at the "number of books" problem above. (a) Compute the expected value of X and interpret its meaning. Answer: E(X) = 4 (b) How many books are expected to be purchased if the enrollment is 20,000 students? Answer: Expected number of books = 4.20,000 = 80,000 (4.2.1)
3. (25 points) A room is 75 ft (side to side) x 80 ft (front to back) x 30 ft (floor to ceiling). The front wall is made out of glass, the back wall is covered with curtains, both sidewalls are made of plasterboard, the ceiling is covered with acoustical board, and the floor is concrete. Table 8-3 Average Absorption Coefficients for Several Types of Building Materials at Octave Frequency Intervals Frequency (Hz) 4000 Material 2000 125 250 500 1000...