# Question: What is the confidence coefficient in a 90 confidence interval

What is the confidence coefficient in a 90% confidence interval for µ?

## Answer to relevant Questions

What is the confidence level of each of the following confidence intervals for µ? a. ± 1.96(σ/√n) b. ± 1.96(σ/√n) c. ± 1.96(σ/√n) d. ± 1.96(σ/√n) e. ± 1.96(σ/√n) Refer to the Evolutionary Qi Ecology Research (July 2003) study of the patterns of extinction in the New Zealand bird population, presented in Exercise. Suppose you are interested in estimating the mean egg length (in ...The following sample of 16 measurements, saved in the LM7_34 file, was selected from a population that is approximately normally distributed: a. Construct an 80% confidence interval for the population mean. b. Construct a ...A random sample of size n = 144 yielded p̂ = .76. a. Is the sample size large enough to use the methods of this section to construct a confidence interval for p̂? Explain. b. Construct a 90% confidence interval for p. c. ...In each case, find the approximate sample size required to construct a 95% confidence interval for p that has sampling error SE = .06. a. Assume that p is near .3. b. Assume that you have no prior knowledge about p, but you ...Post your question