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  3. . a recent drug survey showed an increase in the u

. A recent drug survey showed an increase in the use of drugs and alcohol among...

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Question

Statistics

. A recent drug survey showed an increase in the use of drugsand alcohol among local high school seniors as compared to thenational percent. Suppose that a survey of 100 local seniors and100 national seniors is conducted to see if the proportion of drugand alcohol use is higher locally than nationally. Locally, 65seniors reported using drugs or alcohol within the past month,while 60 national seniors reported using them.

                                                                 Ho:p1 = p2

                                  Ha: p1 ? p2

       2-PropZTest

x1:

n1:

x2:

n2:

prop ≠ p0 < p0 > p0

Calculate

1-PropZTest

p1 ? p2

Z=

P=

P’1=

P’2=

n1=

n2=

Conclusion

Answer & Explanation Solved by verified expert
4.2 Ratings (554 Votes)
solutionlet sample 1 is used for drug use locally and sample no 2 isdenoted for drug use nationallynumber of senior who reported use of    See Answer
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