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In a sample of 64 clamps the mean time to complete was 49.1 seconds. Assume that the population standard deviation is 9 seconds. What is the lower bound of the 98% confidence interval.
An experiment with three outcomes has been repeated 50 times, and it was learned that E1 occured 20 times, E2 occured 13 times, and E3 occured 17 times.
We use statistical software to do the prediction and obtain the following output. 95% confidence interval for the average profit of companies with 500 units of sales is?
a sample of 8 observations is selected from a normal population for which the population standard deviation is known to
Does this provide evidence that the company has reached its goal? Using your confidence interval, test an appropriate hypothesis and state your conclusion.
You own a $46,000 portfolio comprised of four stocks. The values of stocks A, B, and C are $5,600, $16,700, and $11,400, respectively. What is the portfolio weight of stock D?
What were the difficulties that Japanese Americans, African Americans, and women faced during WorldWar II?
You are given the sample mean and the sample standard deviation. Use this information to construct the 90% and 95% confidence intervals for the population mean. Which interval is wider? If convenient, use technology to construct the confidence int..
Define/update account having account number, balance, history of operations on it. Each account pertains to a unique branch. History of operations shows operation (deposit/withdraw), amount deposited/withdrawn, balance before and after operation, ..
Construct a stem and leaf diagram with the last digit being a leaf and the first two digits a stem. Do not repeat stem values.
What are the advantages and disadvantages of the surveying methods you did not used and what type of score did you use why?
The importer randomly samples 60 bottles of the new wine and obtains a sample mean x‾= 9.3%. Give a 90% confidence interval for the average percentage of alcohol in all bottles of the new wine.
What are Joe's personal probabilities for Duke and North Carolina? What is Joe's personal probability that one of the 9 teams other than Maryland, Duke, and North Carolina will win the tournament?
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