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9 Sep 2020
a) Find the point estimation for average age
b) With 95% confidence, what is the margin of error? With 90%
confidence, what is the margin of error?
c) What is the 95% confidence interval estimate of the population
mean (mean children age in all summer camps)?
d) What would happen to the confidence interval if the confidence
level would be increased to 99%? Would the confidence interval
become wider or narrower? Why? Assume that the sample size remains
the same.
e) Do you agree or disagree with the claim that the used sample is
too small to guarantee maximum tolerable error (acceptable margin
of error) +-2 yers? Why?
a) Find the point estimation for average age
b) With 95% confidence, what is the margin of error? With 90%
confidence, what is the margin of error?
c) What is the 95% confidence interval estimate of the population
mean (mean children age in all summer camps)?
d) What would happen to the confidence interval if the confidence
level would be increased to 99%? Would the confidence interval
become wider or narrower? Why? Assume that the sample size remains
the same.
e) Do you agree or disagree with the claim that the used sample is
too small to guarantee maximum tolerable error (acceptable margin
of error) +-2 yers? Why?
28 Feb 2023
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