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A U.S. Travel Data Center survey of 1500 adults found that 42% of respondents stated that they favor historical sites as vacations. Find the 99% confidence interval of the true proportion of adults who favor visiting historical sites as vacations.
To test whether or not there is a difference between treatments A, B, and C, a sample of 12 observations has been randomly assigned to the 3 treatments.
Explain the organization, inventory problem it faces, and expected benefits which are motivating organization to implement a solution.
Following data from an x bar chart, is the process capable (capability index>1.33)?
The average cost of a one bedroom apartment in a town is $550 per month. What is the probability of randomly selecting a sample of 50 one bedroom apartments in this town and getting a sample mean of less then $530 if the population standard deviat..
Explain the difference between descriptive and prescriptive (optimization) models. Describe how to use Excel data tables, scenario manager, and goal seek tools to analyze decision models.
Students in the social work course received the following course grades. Create a frequency distribution for this data. Compute the mean. Determine the median.
The diameters of peaches in a certain orchard are normally distributed with a mean of 5.10 inches and a standard deviation of 0.40 inches.
Difference in the mean number of times men and women order take-out dinners in a month? What is the p-value?
A company produces two products that are processed on two assembly lines. Assembly line 1 has 100 available hours, and assembly line 2 has 42 available hours.
The following data show levels of fertilizer use (lbs) and wheat yield (bushels) on repeated trials on a six acre plot.
A random variable has a standard deviation of 16, and an unknown mean. Find the lowest size of a simple random sample so that the sample mean estimates the population mean with a standard error no larger than 0.25.
What is 95% confidence interval estimate for average number of years served by all Supreme Court justices?
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