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Near the time of an election, a cable news service performs an opinion poll of 500 probable voters. It shows that the Republican contender has an advantage of 52% to 48%.a.Develop a 95% confidence interval for the proportion favoring the Republican candidate. (Round your answers to 3 decimal places.)b.Estimate the probability that the Democratic candidate is actually leading. (Round your answer to 4 decimal places.)c.Repeat the above analysis based on a sample of 4,500 probable voters. (Round your interval to 3 decimal places and Probability to 4 decimal places.)
What would be the 80th percentile for height?
What is the correlation between pre-test scores and post-test scores? Assuming the obvious directional hypothesis (i.e., that those who score highly at pre-test tend to score highly at post-test), is the correlation statistically significant?
The ratio of the two population variances.
How would you define the Wilcoxon Signed Rank Test?
Determine and interpret the sensitivity of mammography.
What is an interaction? Describe an example and identify the variables within your population (work, social, academic, etc.) for which you might expect interactions?
What statistical test should be used to analyze these data - How can internal and external validity be increased in an experiment and briefly describe the type of information that should be in an introduction.
Observed Treatment Success
A survey of people in Iowa showed that 40 out of 400 prefer watching TV comedy shows. Another survey in Colorado showed that 90 out of 600 prefer watching TV comedy shows. At a 1% significance level, would it seem that the true proportions of p..
Individual data values or grouped data when creating a frequency distribution?
Major League Baseball there are five teams in the Western Division of the National League: Arizona, Los Angeles, San Francisco, San Diego, and Colorado. How many different orders of finish are there for these five teams? Place your answer in the blan..
Statistics from Cornell's Northeast Regional Climate Center indicate that Ithaca, NY, gets an average of 35.4" of rain each year with a standard deviation of 4.2". Assume the data is normally distributed.
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