Content Preview

ISYE 6414 – homeworks Exam 2025 Questions and Answers In simple linear regression, the _______ of one member of the population will always be wider than the confidence interval of the mean response for all members of the population when using the same predicting value. - --CORRECT ANSWER--prediction interval (because they have additional variance from the variation of a new measurement) In ANOVA, the linearity assumption is assessed using a plot of the response variable against the predicting variable. - --CORRECT ANSWER-False. Linearity is not an assumption of ANOVA. If the assumptions of a simple linear regression model hold, then the estimator for the variance of the error terms, o^2 is a random variable. - -CORRECT ANSWER--True. We assume that the error terms are independent random variables. Therefore, the residuals are independent random variables. Since o^2 is a combination of the residuals, it is also a random variable. The estimated simple linear regression coefficient, B-hat-0, ....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 1