Show your work and explain your process for determining the solution for each of these problems on a word document with the solution given below the problem. If Excel was used, please indicate that as...

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Answered Same DayFeb 23, 2021

Answer To: Show your work and explain your process for determining the solution for each of these problems on a...

Mohana answered on Mar 02 2021
158 Votes
Opinions about investment in Space shuttle program were surveyed during June 2015 -19
These survey results can be found
at: http://pollingreport.com/space.htm
The question posed was "Do you think the space shuttle program has been a good investment for this country, or don't you think so?”
N=1,502 adults nationwide. Margin of error ± 3.5.
55% were in favor of investment in space shuttle program
36% were opposed of the investment in space shuttle program
9% were unsure of their opinion in investment in space shuttle program
Solution:
1a.confidence interval for those who were in favor = (55 -3.5, 55+3.5) = (51.5%, 58.5%)
1b. the following output is obtained using template
    Confidence Interval for Proportion
    Sample Size
    1502
    Number of Successes
    826
    Confidence Level
    95.00%
    
    
    Proportion of sample
    0.54993
    z - score for the left side of the confidence interval
    -1.95996
    z - score for the right side of the confidence interval
    1.95996
    Standard Error of the proportion
    0.01284
    
    
    Lower Limit = proportion - standard error*z -score left side
    0.52477
    Upper Limit = proportion + standard error*z -score right side
    0.57509
1c. The calculated confidence interval...
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