2. A software quality engineer wants to develop a regression model for predicting the number of faults in program (y). S/He decided that four software complexity metrics are potentially useful as independent variables, namely program size in lines of code in program (x) and excecutable lines of code (2), program control flow measured in terms of the number of branches (r3) and the number of tokens in program x4). Data were collected on a set of 24 programs from a distributed application in a data communication software system. The ANOVA table for the model yi = A-+Alli +AT2i +BuT3i + 4E4i + Ei was found to be as follows: Source of Variation df SS MS Model Error Total 4 5409.99 19 16.35 23 5426.34 (a) Test to determine whether a regression relation exists between y and the set of independent variables. Use a level of significance of 05. What do you find? 2. A software quality engineer wants to develop a regression model for predicting the number of faults in program (y). S/He decided that four software complexity metrics are potentially useful as independent variables, namely program size in lines of code in program (x) and excecutable lines of code (2), program control flow measured in terms of the number of branches (r3) and the number of tokens in program x4). Data were collected on a set of 24 programs from a distributed application in a data communication software system. The ANOVA table for the model yi = A-+Alli +AT2i +BuT3i + 4E4i + Ei was found to be as follows: Source of Variation df SS MS Model Error Total 4 5409.99 19 16.35 23 5426.34 (a) Test to determine whether a regression relation exists between y and the set of independent variables. Use a level of significance of 05. What do you find