2.12 In order to investigate the feasibility of starting a Sunday edition for a large metropolitan newspaper. information was obtained from a sample of 34 news- papers concerning their daily and Sunday circulations (in thousands) (Source: Gaie Directory of Publications, 1994). The data are given in Table 2.12 and can be found in the book's Web site. (a) Construct a scatter plot of Sunday circulation versus daily circulation. Does the plot suggest a linear relationship between Daily and Sunday circulation? Do you think this is a plausible relationship? (In) Fit a regression line predicting Sunday circulation from Daily circulation. (c) Obtain the 95% condence intervals for u and $1. (d) Is there a signicant relationship between Sunday circulation and Daily circulation? Justify your answer by a statistical test. Indicate what hypothesis you are testing and your conclusion. Table 2.12 Newspapers Data: Daily and Sunday Circulations (in Thousands) Newspaper Daily Sunday Baltimore Sun 391.952 488.506 Boston Globe 516.981 798.298 Boston Herald 355.628 235.084 Charlotte Observer 238.555 299.451 Chicago Sun Times 537.780 559.093 Chicago Tribune 733.775 1 133.249 Cincinnati Enquirer 198.832 348.744 Denver Post 252.624 417.779 Des Moines Register 206.204 344.522 Hartford Courant 231.177 323.084 Houston Chronicle 449.755 620.752 Kansas City Star 288.571 423.305 Los Angeles Daily News 185.736 202.614 Los Angeles Times 1164.388 1531.527 Miami Herald 444.581 553.479 Minneapolis Star Tribune 412.871 685.975 New Orleans Times-Picayune 272.280 324.241 New York Daily News 781.796 983.240 New York Times 1209.225 1762.015 Newsday 825.512 960.308 Omaha World Herald 223.748 284.61 1 Orange County Register 354.843 407.760 Philadelphia Inquirer 515.523 982.663 Pittsburgh Press 220.465 557.000 Portland Oregonian 337.672 440.923 Providence Journal-Bulletin 197.120 268.060 Rochester Democrat & Chronicle 133.239 262.048 Rocky Mountain News 374.009 432.502 Sacramento Bee 273.844 338.355 San Francisco Chronicle 570.364 704.322 St. Louis Post-Dispatch 391.286 585.681 St. Paul Pioneer Press 201.860 267.781 Tampa Tribune 321.626 408.343 Washington Post 838.902 1165.567