Helena and Laura were talking on the phone. Laura's two-year-old son fell and started crying loudly. Laura could no longer hear what Helena said. This is an example of . feedback filtering encoding noise decoding

Why are committees necessary in congress?

Why was george washington being elected unanimously important? it indicated how much respect and popularity he had gained. it paved the way for other unanimous elections. it meant that he would be president forever. it meant that he voted for himself.

Dr. redbull conducts a study to determine whether her new energy drink children perform better on spelling tests. she randomly assigns children to one of two groups: group 1 receives her energy drink and group 2 receives water. she then gives both groups a spelling test and compares the results. which of the following is true about this study? a. group 1 is the dependent variable and group 2 is the independent variable. b. this is a correlational study. c. group 2 is the experimental group. d. the independent variable is the type of drink the children receive.