This problem is based on the concepts of the expectations and variance and covariance of random variables.
A) Find the Variance of X + Y. B) Find Cov(X,Y). Give your answers to the nearest hundredth.
Find the volume of each figure. Round your answers to the nearest hundredth, if necessary. 5 in 7 m 4 in 15) 16) 10 7 m 10 m 10 m 10 17) 18) 8 m 7 m 3 m 2.6 m 3 m 2 m 19) 20) 4 12 11 8.8 km 12 t 21) A hemisphere has a radius of 7.3 cm. Find the surface area and volume.
G.GMD.1b Find the volume of each figure. Round your answers to the nearest hundredth, if necess 8) 9 mi 9) 2cm 3 mi3 mi 1 cm 1 cm tah 81 mi? 0.66 10) 5 in 6 in 8 cm x 20 cm 3.72 Jon H 8 in V = 73.1 T.20208 = 3200 T = 10053.10 cm 13) A cylinder and a rectangular prism have the same volume and all of their cross sections share the same area. Assuming that...
To the nearest hundredth, give the decimal notation for 50°25'42".
Express monetary answers to the nearest whole dollar. Express percentage answers to the nearest hundredth 24.After saving diligently herentire career, Alexandra isready to retire with a nest egg of $692,500. Sheneedsto invest this money in a mix of stocks and bonds that will allow herto withdraw $5,750 per month for 20 years. What annual interest rate (APR) doesshe need to earn?(Express as a percentage to the nearest hundredth) 25.Susan borrowed $62,500 in student loans and she has just graduated from...
(Hard!) b. Theoretically, find Cov(X, Y) and cor (X, Y). Check your theoretical answers by using your data from part a to find the sample correlation. Hint: Recall that the joint distribution of two random variables has a relationship to the condition and marginal distributions fx,y (x,y)-yx() (Hard!) b. Theoretically, find Cov(X, Y) and cor (X, Y). Check your theoretical answers by using your data from part a to find the sample correlation. Hint: Recall that the joint distribution of...
Find the standard deviation for the given probability distribution. Round to the nearest hundredth. X P(x) 0 0.09 10.34 20.23 30.12 4. 0.22 O A. o = 1.70 OB. o = 1.30 O C. o = 1.34
Find the expected value of the probability density function to the nearest hundredth. 1 f(x) = 3; [3, 6) O A. 4.17 B. 4.50 O C. 4.00 OD. 5.00
Find the expected value of the probability density function to the nearest hundredth. f(x) = 3: 13,6 O A. 4.17 OB. 4.50 O C. 4.00 OD. 5.00
Suppose that Cov(X,Y ) = 0.9 and Cov(X,Z) = −0.7. (a) What is Cov(X,Y + Z)? b) What is Cov(3X,−2Y )?
b) The joint density of random variables X and Y is f(x,y)=' elsewhere 0' Find cov(X, Y).