Mathematics, 25.04.2021 22:30 sofipalis9869
A random sample of 24 items is drawn from a population whose standard deviation is unknown. The sample mean is
x¯
= 880 and the sample standard deviation is s = 5. Use Appendix D to find the values of Student’s t.
(a) Construct an interval estimate of μ with 99% confidence. (Round your answers to 3 decimal places.)
The 99% confidence interval is from
to
(b) Construct an interval estimate of μ with 99% confidence, assuming that s = 10. (Round your answers to 3 decimal places.)
The 99% confidence interval is from
to
(c) Construct an interval estimate of μ with 99% confidence, assuming that s = 20. (Round your answers to 3 decimal places.)
The 99% confidence interval is from
to
(d) Describe how the confidence interval changes as s increases.
Answers: 1
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A random sample of 24 items is drawn from a population whose standard deviation is unknown. The samp...
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