The table below list weights (carats) and prices (dollars) of randomly selected diamonds Weight 0.3 0.4 0.5 0.5 1.0 0.7 Price 510 1151 1343 1410 5669 2277 Find r Test with a .05 level of significance H0 : ρ = 0  and H1: : ρ ≠ 0 Find m and b for simple regression

A researcher's results are shown below using Femlab(labor force participation  rate among females) to try to predict Cancer (death rate per 100,000 population due to cancer) in the 50 US states. What is the R2 for this regression? Source of variation df ss ms f Regression 1 5377.836 5377.836 5.228879 residual 48 49367.389 1028.487   total 49 54745.225

Interpret the following three sets of data (X versus Y) using scatter chart and regression analyze X: C16 (number of cars on the sales lot) versus Y: C17 (cars sold per day)

solve a,b and c given in the image provided.

An automobile rental company wants to predict the yearly maintenance expense (Y) for an automobile using the number of miles driven during the year () and the age of the car (, in years) at the beginning of the year. The company has gathered the data on 10 automobiles and run a regression analysis with the results shown below:.   Summary measures       Multiple R 0.9689       R-Square 0.9387       Adj R-Square 0.9212       StErr of Estimate 72.218                 Regression coefficients         Coefficient Std Err t-value p-value Constant 33.796 48.181 0.7014 0.5057 Miles Driven 0.0549 0.0191 2.8666 0.0241 Age of car 21.467 20.573 1.0434 0.3314 Use the information above to estimate the annual maintenance expense for a 10 years old car with 60,000 miles.

a. b. Shown below is a portion of a computer output for a regression analysis relating y (dependent variable) and x (independent variable). ANOVA Regression Residual Total Intercept Variable x df 1 13 14 Coefficients 16.156 -0.903 SS 50.58 55.42 106.00 Standard Error 1.42 0.26 1 Stat Perform a t test and determine whether y and x are related. Use a= .05. Compute the coefficient of determination and fully interpret the meaning. Be specific.