Experimental Design Practice Problems

: Experimental Design Practice ProЫems ��'Cl�VJtY ) � - 1. Smithers thinks that а special juic� will increase the productivity of workers. Не creates two groups of 50 workers and assigns each group the same task (in this case, they're supposed to staple а set of papers). Group А is given the special juice to drink while they work. GroLJP В is not given the special juice. After an hour, Smithers coLmts how many stacks of papers each group has made. Group А made 1,587 stacks, Group В made 2,113 stacks. а. State the proЫem. that Smithers is trying to figure out . · . °' ,.. Ь. Control Group- r '-\Х С)�� \J с. f\ Experimental Group- (\'(�\). � ° V)�\\\\s)x �. ,\).)��\� �-о '\X'\(Xto.':)t.i �� �6-\\.°' \'1 \��J � \\) С)� ti Х ':> . V')�t�\(}.\ • �\ (,tJ d. lndependent VariaЫe- (the thing that Smithers changes)- 1 \�(., (��) 6;,\] •\\ � - \\\ е. Control VariaЫe(s} (the things that Smithers leaves the same)- (}..���\ f. Deреп dent Va riaЫ е { thе thi ng that уа u о Ь serve/kee р data оп)· � l)i\ \). g. What should Smithers' conclusion Ье? ) \\\t ,�� �tl\� \ \�\lt l\')X\ \:х \)\ °)'< {.)�� "'(.).� 0� Q)\\\(\:.Ь l L °'��� \\�\ \)� . · \)' \�(Jt��t V"�\A\\l\ \\J ,,�. V)\o.(j..� �, ��Xt �().�{'( VO.�. 2. Homer notices that his shower is covered in а strange green slime. His friend Barney tells him /,, ,··; that coconut juice will get rid of the green slime. Homer decides to c�ieck this out Ьу spraying ;:__;;:.:;.} ··> . -�/•. . half of the shower with coconut juice. Не sprays the other half of the sl1ower with water. After 3 �> •·f:}' days of "treatment" there is по change in the appearance of the green slime on eiH1er side of the �� $,��� · . �/"� •. �1�sh ower. .?. а. State the ргоЫеm that Ноmег is trying to figure oul. 'N. \\\ ( 0 Ь. Control Group - ")\\ �t'(. �\(\t \\) � О\ с. d. . \�� lL . . . \,Q�S)'(\\I.� "'ffit, -�\\\lt Q)\\mt_ ' . �\� �� �\\�. \\\l( J lndependent VariaЫe (the thing that Homer changes) t�\...�'(\�\ • )\\.\. (j_, Exper1mentalGroup- \ <)l.\)�\)._� е. Control VariaЫe(s} (the things tliat Homer leaves the same) \\'«\� (�О.О..��} f. Dependent VariaЫe (the thing that you observe/keep data on) g. What should Homer's conclusion Ье? t, . 0,.1::)tl') f'\,½\\_t<\t; . \.о(_�'(\\}..\ � �t '(\• \)\ о.._��'(\\ '(\�-\ С)� '{\�\� <\t\ . °)�{t '(\ G:)�\«\l· х-·\�