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A sample of 800 voters revealed that 52% of them would vote for a specific issue. Create and interpret a 95% confidence interval for the support of the issue. In the interpretation indicate what type of statement you can make about the issue passing. What is the error of the estimate for this problem? How could you decrease the size of the interval?
A company has just manufactured 1694 CDs and 376 are defective. If 9 of these CDs are randomly selected for testing, what is the probablity that the entire batch will be accepted?
20% of their customers purchase package 3 and 25% of their customers purchase package 4. Find the expected value or average profit per customer.
In a previous example about the body mass index of young women we developed a 95% confidence interval for the mean body mass index
In a clinical study of an allergy drug, 114 of 203 subjects reported experiencing significant relief from their symptoms. What is the point estimate of the true proportion of people who reported relief in the population.
suppose a geyser has a mean time between eruptions of 94 minutes. let the interval of time between the eruptions be
Multiple choice question based on multiple regression - partial computer output based on a sample of 16 observations and find the estimated regression equation
questionto test the efficacy of admissions or release an emergency room embarks on a controlled experiment. each
First part of this theorem allows a problem solver to compute probabilities about sample means regardless of whether a population is normally distributed.
A company adminsters an "aptitude test for managers" to aid in selecting new management trainees. Prior experience suggests that 60 percent of all applicants for management trainee positions would be successful if they were hired.
Find/discover an example of statistics in the news to discuss the following statement that represents one of the objectives of statistics analysis: "Statistics helps us make decisions based on data analysis.
Sample mean is $43000 for a sample of n = 100 construct a 90% confidence interval that her estimate is correct. Interpret the answer in the context of the problem.
Dr. S wishes to measure the effect of TV viewing on reading scores in elementary school children. The data for the sample are shown here. Assume the population is normal.
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