12) Bob and Stu think that ginger can increase intelligence. So they build a simple maze, and record the times of 6 lab rats running through. Over a period of 3 days they increase ginger intake on each day, and re-measure the maze times. Each rat is tested once each day. As incentive, the rats are deprived of food for 5 hours before each test, and tasty rat food is placed at the end of the maze each time. Bob and Stu find that running time decreases each day. They thus conclude that ginger increases intelligence. find the independent and dependent variable

1. the manager of collins import autos believes the number of cars sold in a day (q) depends on two factors: (1) the number of hours the dealership is open (h) and (2) the number of salespersons working that day (s). after collecting data for two months (53 days), the manager estimates the following log-linear model: q 4 equation 1 a. explain, how to transform the log-linear model into linear form that can be estimated using multiple regression analysis. the computer output for the multiple regression analysis is shown below: q4 table b. how do you interpret coefficients b and c? if the dealership increases the number of salespersons by 20%, what will be the percentage increase in daily sales? c. test the overall model for statistical significance at the 5% significance level. d. what percent of the total variation in daily auto sales is explained by this equation? what could you suggest to increase this percentage? e. test the intercept for statistical significance at the 5% level of significance. if h and s both equal 0, are sales expected to be 0? explain why or why not? f. test the estimated coefficient b for statistical significance. if the dealership decreases its hours of operation by 10%, what is the expected impact on daily sales?

Given: pb tangent pv,pu secants if m = 80° and m = 30°, then m 3 = 55 40 25

Chase is working to earn money for a cd player. on saturday, he earned half as much as he did on sunday, but twice as much as he did on friday. during the 3 days, he earned $70.00. how much did he earn each day?