Mathematics, 29.11.2019 05:31 rorofhs2009
Asimple random sample of size n is drawn from a population that is known to be normally distributed. the sample variance, s2, is determined to be 19.8.
(a) construct a 95% confidence interval for s2 if the sample size, n, is 10.
(b) construct a 95% confidence interval for s2 if the sample size, n, is 25. how does increasing the sample size affect the width of the interval?
(c) construct a 99% confidence interval for s2 if the sample size, n, is 10. compare the results with those obtained in part (a). how does increasing the level of confidence affect the width of the confidence interval?
Answers: 2
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Asimple random sample of size n is drawn from a population that is known to be normally distributed....
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