Defective transistors; from past experience a company has found that in cartons of transistors, 92% contain no defective transistor, 3% contain one defective transistors, 3% contain two defective transistor, and 2% three defective transistors. find the mean, variance and standard deviation for the defective transistors. about how many extra transistors per day would the company need to replace the defective ones if it used 10 cartons per day?

Aconcession manager at yankee stadium wants to know how temperature affects beer sales. she took a sample of 10 games and recorded the number of beers sold and the temperature in the middle of the game. temperature 80 68 78 79 87 74 86 92 77 84 number of beers 20533 1439 13829 21286 30985 17187 30240 87596 9610 28742 a. draw a scatter plot of the data. b. the manager estimates the regression equation to be: numberofbeers = −100, 678 + 1, 513 ∗ temperature draw this on your scatter plot. c. for one of the estimated points, indicate the residual with ei . d. for that same point, indicate what part of the variation is explained by the model with ˆyi − y¯.

Each year a store decreased the price of a certain model of tv by $35 . if the price in 2001 was $1950 , what was the price in 2009

Me because i don't understand how to do it.: )