Question
In: Statistics and Probability
a) Use the normal distribution to find a confidence interval for a difference in proportions p1-p2...
a) Use the normal distribution to find a confidence interval for a difference in proportions p1-p2 given the relevant sample results. Assume the results come from random samples.
A 99% confidence interval for p1-p2 given that p^1=0.76 with
n1=590 and p^2=0.67 with n2=260
Give the best estimate for p1-p2, the margin of error, and the
confidence interval.
Round your answer for the best estimate to two decimal places and
round your answers for the margin of error and the confidence
interval to three decimal places.
Best estimate : ___________________
Margin of error : __________________
Confidence interval :_______________ to ____________________
b) Use the normal distribution to find a confidence interval for a difference in proportions p1-p2 given the relevant sample results. Assume the results come from random samples.
A 90% confidence interval for p1-p2 given counts of 103 yes out
of 120 sampled for Group 1 and 33 yes out140 sampled for Group
2
Give the best estimate for p1-p2, the margin of error, and the
confidence interval.
Round your answers to three decimal places.
Best estimate : ___________________
Margin of error : __________________
Confidence interval :_______________ to ____________________
Solutions
Expert Solution
where p1^-p2^ portion is the best estimate and the remaining denotes the margin of error.
orchestra answered 1 year agoRelated Solutions
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If a 95% confidence interval for two population proportions
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a) Use the normal distribution to find a confidence interval for a proportion p given the...
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best point estimate for p, the margin of error, and the
confidence interval. Assume the results come from a random
sample.
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