please help!
1. People have been using cameras for private daily use since the 1880s, and the first Kodak camera cost a lot of money in those days. Today we wish to see if the size of the camera can be used to predict the cost. The data is given below: Y = cost in dollars X = weight in ounces y {300, 250, 350, 400, 150, 180, 140, 300, 300, 200} X {6, 5, 7, 5, 6, 6, 4, 6, 6, 5} The following information is available for you to use in the analysis of this topic. n=10 x = 5.6 y =257 SSxy = 248 SSxx = 6.4 SSyy = 69010 Write the regression model. Oy = 30 + 31X1 + 32X2 + 83X3 + 34X4 + 35X5 + 36X6 + 37X7 + 38X8 + 39X9 + 310X10 + & Oy = 30 + 31X1 + & Oy = 30 + 31X1 + 32X2 + & O none of these11. Find the coefficient of determination and interpret its value. O 0.8607; about 86% of the variation in the y values is explained by the model. 0 0.1393 the model predicts y 14% of the time O 0.1393 about 14% of the variation in the y values is explained by the model. O 0.3732 about 37% of the variation in the y values is explained by the model. O None of these SAVE VIEW CORRECT ANSWER 12. Find E(y) when x = 5 O 200 O 250 O both a and b O 233.752. Find the least squares prediction equation. OV = -300 + 100X1 OV= 0+ 50X1 OV = 40 + 38.75X1 O none of these3. Predict the cost of a 5 ounce camera. OV = 233.75 O V = 400 OV = 200 O none of these SAVE VIEW CORRECT ANSWER 4. Calculate the prediction error of a 5 ounce camera. Oy - W = 143 Oy - W =-57 O-33.75 Oy - W = 16.25, 166.25, -33.75 O none of these5. Calculate SSE. 0 78620 0 729500 O 59400 O none of these SAVE VIEW CORRECT ANSWER 6. Calculate S. O 86.1684 O 7425 O 243.7212 O none of these7. Do the data provide sufficient evidence to indicate that X contributes information to the prediction of Y? Write the null and alternative hypotheses. O HO : 31 = 0 Ha : 31 # 0 O HO : 31 # 0 Ha : 31 = 0 O HO : 32 = 0 Ha : 32 # 0 O none of these SAVE VIEW CORRECT ANSWER 8. What is the test statistic value? T = O 34.06 0 1.14 O 0.21 O none of these9. What is the correct decision? O Do not reject Ho O Reject Ho O Reject Ha O none of these SAVE VIEW CORRECT ANSWER 10. What is the conclusion? O There is enough evidence to say that X is significant to the model O There is not enough evidence to say that X is significant to the model O There is enough evidence to say the model is useful. O There is not enough evidence to say the model is useful
