4. ( Just true or false for each, no need for explanation,thankyou)
a.If factors being studied cannot be controlled, the data aresaid to be observational.True or False
b.After rejecting the null hypothesis of equal treatments, aresearcher decided to compute a 95 percent confidence interval forthe difference between the mean of treatment 1 and mean oftreatment 2 based on Tukey's procedure. At ? = .05, if theconfidence interval includes the value of zero, then we can rejectthe hypothesis that the two population means are equal.True orFalse
c.The error sum of squares measures the between-treatmentvariability.True or False
d.In one-way ANOVA, a large value of F results when thewithin-treatment variability is large compared to thebetween-treatment variability.True or False
e.In one-way ANOVA, other factors being equal, the further apartthe treatment means are from each other, the more likely we are toreject the null hypothesis associated with the ANOVA Ftest. True or False
