(20 pts-10 pts each) Voters in a particular city who identify themselves with one or the other of two political parties were randomly selected and asked if they favor a proposal to allow citizens with proper license to carry a concealed handgun in city parks. The results are: Party A 150 Sample size Number in favor Party B 200 140 90 b) Construct the 90% confidence interval for the difference of the two populations propotions.

A First Course in Probability (10th Edition)
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Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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STA 310
1- (20 pts - 10 pts each) Voters in a particular city who identify themselves with one or the other of two
political parties were randomly selected and asked if they favor a proposal to allow citizens with proper
license to carry a concealed handgun in city parks. The results are:
Party A
Sample size
Number in favor
150
Party B
200
90
140
For the difference
b) Construct the 90% confidence interval
of the two populations propotions.
Transcribed Image Text:STA 310 1- (20 pts - 10 pts each) Voters in a particular city who identify themselves with one or the other of two political parties were randomly selected and asked if they favor a proposal to allow citizens with proper license to carry a concealed handgun in city parks. The results are: Party A Sample size Number in favor 150 Party B 200 90 140 For the difference b) Construct the 90% confidence interval of the two populations propotions.
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