qucbuun '1 1 pt: Hayward's Electric and Lightingjust landed a contract to update the electric and lighting systems in a block of Brownstone homes in McLean Va. The time it takes for the electrician to update the electrical wiring in a kitchen can be represented by the random variable X with ux = 2.3 hours and ox = 0.45 hours. The time it takes for the lighting expert to install the new lights in a kitchen can be represented by the random variablerith My 2 0.8 hours and 03, = 0.15 hours The lighting expert must wait until the electrician is nished before she can install the new lighting. There are 5 houses to renovate. Find the expected time it will take to install new wiring and lights in the kitchens for all 5 houses. 0 Expected Time = 40 hours 0 Expected Time = 15.5 hours 0 Expected Time = 3.1 hours 0 Expected Time = 23.3 hours Taylor's construction and paintingjust landed a contract to renovate a block of Brownstone homes in McLean Va. The time it takes for the carpenter to repair the walls in one home can be represented by a random variableXwith #x = 4.3 hours and ox = 0.85 hours. The time it takes for the painter to paint the walls in one home can be represented by the random variablerith Juy = 3.7 hours and 0-3, = 1.2 hours. The carpenter is paid $25/hour and the painter is paid $21/hour. The manager at Taylor's construction wants to calculate the expected employee wages for a single home. Let the random variable W = 25(X)+21(Y). Assume X and Y are independent variables. Find the mean and standard deviation for the random variable W. O ,uw = 185.20 dollars and am = 32.96 dollars 0 pm = 200 dollars and my = 4.88 dollars 0 Mw = 185.20 dollars and Cu; = 4.29 dollars 0 pm = 200 dollars and my = 46.45 dollars