4. Identify each study as being either observational or experimental. Write the reason for your answer. (a) A study was done on two groups of algebra students. Group A was given tutoring and study skills advice. Group B was not given any additional help. After weeks, the students took a test. The results of the two groups were compared. (b) Two groups of factory workers were randomly selected. The individuals in Group 1 worked the night shift. Group 2 individuals worked during the day. At the end of six months, each group was surveyed about job satisfaction.

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4. Identify each study as being either observational or experimental. Write the reason for your
answer.
(a) A study was done on two groups of algebra students. Group A was given tutoring
and study skills advice. Group B was not given any additional help. After weeks, the
students took a test. The results of the two groups were compared.
(b) Two groups of factory workers were randomly selected. The individuals in Group 1
worked the night shift. Group 2 individuals worked during the day. At the end of six
months, each group was surveyed about job satisfaction.
Transcribed Image Text:4. Identify each study as being either observational or experimental. Write the reason for your answer. (a) A study was done on two groups of algebra students. Group A was given tutoring and study skills advice. Group B was not given any additional help. After weeks, the students took a test. The results of the two groups were compared. (b) Two groups of factory workers were randomly selected. The individuals in Group 1 worked the night shift. Group 2 individuals worked during the day. At the end of six months, each group was surveyed about job satisfaction.
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