Chapter 8: Q 8.116. (page 342)
For a curve with , use Table IV to find cach value.
a. as
b. I
C.
Short Answer
Part (a)
part (b)
Part (c)
Chapter 8: Q 8.116. (page 342)
For a curve with , use Table IV to find cach value.
a. as
b. I
C.
Part (a)
part (b)
Part (c)
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The confidence level can be determined if you know only the margin of error, population standard deviation, and sample size.
Positively Selected Genes. R. Nielsen et al. compared annotated genes from humans with their chimpanzee orthologs to identify genes that show evidence of positive selection. The researchers published their findings in "A Scan for Positively Selected Genes in the Genomes of Humans and Chimpanzees" (PLOS Biology, Vol. 3, Issue 6. Pp. 976-985). A simple random sample of tissue types yielded the following number of genes.
Express the form of most of the confidence intervals that you will encounter in your study of statistics in terms of "point estimate" and "margin of error."
Political Prisoners. A. Ehlers et al. studied various characteristics of political prisoners from the former East Germany and presented their findings in the paper "Posttraumatic Stress Disorder (PTSD) Following Political Imprisonment: The Role of Mental Defeat. Alienation, and Perceived Permanent Change". According to the article. the mean duration of imprisonment for 32 patients with chronic PTSD was months. Assuming that months, determine a confidence interval for the mean duration of imprisonment,. of all East German political prisoners with chronic PTSD. Interpret your answer in words.
Venture-Capital Investments. In Exercise 8.69, you found a confidence interval for the mean amount of all venture-capital investments in the fiber optics business sector to be from million tomillion. Obtain the margin of error by
a. taking half the length of the confidence interval.
b. using Formula on page 325. (Recall that and that million.)
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