Select all that apply

Residuals vs Fitted O OO Residuals -1.5 0.0 1.0 0 00 O 149 1290 4.0 4.5 5.0 5.5 6.0 6.5 Fitted values Victoria fit a linear regression line through the data using R. She has provided you with the diagnostic plot above and is asking for your help in deciding if it's reasonable to fit a linear regression line to these data. What assumption(s) is(are) supported by this plot? Select all that apply. No partial credit will be awarded for this question. The population relationship between life expectancy and happiness score is in fact linear. The true errors follow a Normal distribution. The observed residuals follow a Normal distribution. The true errors have constant variance. The observed residuals have constant variance