A random sample of 2000 people was taken. 800 of the people in the sample favored...
A random sample of 2000 people was taken. 800 of the people in the sample favored Candidate A. The 95% confidence interval for the true proportion of people who favor Candidate A is 0.440 to 0.460 0.355 to 0.445 0.379 to 0.421 0.345 to 0.455 0.375 to 0.425 0.391 to 0.409
Homework Answers
We have given,
x=800
n=2000
Estimate for sample proportion= 0.4
Z critical value(using Z table)=1.96
Confidence interval formula is
=(0.379,0.421)
0.379 to 0.421
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