lease see below. Note that I am only given one attempt at this and I believe that the answer I have may not be correct. In selecting the sample size to estimate the population proportion pp, if we have no knowledge of even the approximate value of the sample proportion p̂ p^, we: A. take two more samples and find the average of their p̂ p^ B. let p̂ =0.95p^=0.95 C. let p̂ =0.50p^=0.50 D. take another sample and estimate p̂ p^ Under which of the following circumstances is it impossible to construct a confidence interval for the population mean? A. A normal population with a large sample and a known population variance. B. A normal population with a small sample and an unknown population variance. C. A non-normal population with a large sample and an unknown population variance. D. A non-normal population with a small sample and an unknown population variance.
Please see below. Note that I am only given one attempt at this and I believe that the answer I have may not be correct.
In selecting the
A. take two more samples and find the average of their p̂ p^
B. let p̂ =0.95p^=0.95
C. let p̂ =0.50p^=0.50
D. take another sample and estimate p̂ p^
Under which of the following circumstances is it impossible to construct a confidence interval for the population mean?
A. A normal population with a large sample and a known population variance.
B. A normal population with a small sample and an unknown population variance.
C. A non-normal population with a large sample and an unknown population variance.
D. A non-normal population with a small sample and an unknown population variance.
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