two student conducted a study to determine whose handwriting is better. each stu
ID: 3337918 • Letter: T
Question
two student conducted a study to determine whose handwriting is better. each student wrote a short essay on the importance os studying and asked his friend to rate his handwriting, using a questionaire, student B asked a random sample of her friend to complete the same questionaire and compared the results. why are the results invalid.
a. Student A and Student B each ony wrote one essay
b. Student A and student B may have a different population of friends
c. Student A and student B each were only administered one questionaire
d. Student A and Student B used random samples
Explanation / Answer
The right choice of answer is b)student A and student B may have different population of friends.
Since a valid result can be obtain if the students have asked to same people or frinds. or technically the compaison is not done in the same environment, they should ask same the questionaire to same population.
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