27. If alpha =0.10, what is the confidence level? O A. 10% O B. 90% O C.80% O D. Cannot be determined.
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- If n=11, ¯xx¯(x-bar)=35, and s=8, find the margin of error at a 90% confidence level. Answer to two decimal places.3.Help please with a-cIf n=28, ¯x(x-bar)=32, and s=11, construct a confidence interval at a 95% confidence level. Assume the data came from a normally distributed population.Give your answers to one decimal place.
- Here are the summary statistics for randomly selected weights of newborn girls: n =247, x= 32.2 hg, s= 6.8hg . Construct a confidence interval estimate of the mean. Use 90% confidence level. Are these results very different from the confidence interval 31.0 hg < u < 33.2 hg with only 18 sample values, x= 32.1 hg and s=. 2.7 hg ? What is the confidence interval for the population mean u ? _ hg < u< hg _ (round to one decimal places as needed ? Are the results between the two confidence intervals very different ? a. Yes, because the confidence interval limits are not similar. b. No. because the confidence interval limits are similarc. Yes, because one confidence interval does not contain the mean of the other confidence intervald.Here are summary statistics for randomly selected weights of newborn girls:n=157, x=28.8 hg, s=7.2 hg. Construct a confidence interval estimate of the mean. Use a 99% confidence level. Are these results very different from the confidence interval 26.1 hgThe Za/2 value for a confidence interval is found as 1.29. What is the confidence level? Select one: а. 80% b. 70% c. 90% d. 83% е. 75%What is the probability for a z-score of 1.597 What is the confidence interval for a study if the margin of error is 2.35 and your point of estimates is 5.50.Letter c onlyIf n = 20, the sample mean = 250, SD = 15, SEM = 3.354, what is the confidence interval (using 95% confidence level). What percent confidence do you have that the population mean is between what two valuesIf n=29, x¯(x-bar)=31, and s=8, construct a confidence interval at a 90% confidence level. Assume the data came from a normally distributed population.Give your answers to one decimal place.What are the confidence intervals for: Mean= 5.9 Sd= 3 N=200 α= .018. Form a 90% confidence interval on the difference in means. group wine sample std dev 2.0 mean 10 17.4 no alcohol 10 12.4 2.0SEE MORE QUESTIONS
