Suppose you have a random sample of employees in your company and their tenure. The sample mean of this sample is 4.2 years and the sample standard deviation is 4.5 years. How would knowing that the random sample was of size 100 instead of 60 change the 90% confidence interval for the population mean of employee tenure?
A. The 90% confidence interval will be biased for 100.
B. The 90% confidence interval will be larger for 100 than 60.
C. The 90% confidence interval will be smaller for 100 than 60.
D. The 90% confidence interval will be biased for 60.
Answer: C
You might also like to view...
The human temperature set point typically
a. ranges from about 96.0?F to about 99.5?F. b. stays right at about 98.6?F. c. stays right at about 96.8?F. d. ranges from about 98.0?F to about 99.5?F. e. ranges from about 94.0?F to about 99.0?F.
Reef systems
a. be all be destroyed within 30 years. b. are formed from calcium carbonate secreted by coral polyps. c. have symbiotic dinoflagellates in the living coral. d. have shown widespread bleaching; death of corals is being reported worldwide. e. include all of these.
Which of the following is TRUE about group selection?
a) It is a common occurrence in large populations. b) It is at least as common as reciprocal altruism. c) It leads to unselfish individual behavior that benefits the population or species. d) It tends to increase altruistic behavior. e) It becomes progressively more common over several generations.
Which of the following statements is TRUE?
A) All three types of interferons have the same effect on the body. B) Alpha interferon promotes phagocytosis. C) Gamma interferon causes bactericidal activity by macrophages. D) Alpha interferon acts against specific viruses. E) Beta interferon attacks invading viruses.