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Yankee Hill Stone Co has a contract to supply gravel for all road repairs. The company maintains 3 stockpiles, each containing the following amounts of gravel: #1-100 tons, #2-60 tons #3-80 tons. Because of recent flooding, many roads need repair. The company has rcvd instructions to deliver the following amounts of gravel to these locations: Fremont-40 tons, Johnstown-90 tons Marion-110 tons. Contract est. for many years and transportation cost per ton/location are well known.
Fremont Johnstown Marion#1 4 5 2#2 8 7 10#3 6 1 4
Starting with the initial solution derived by the nw corner method identify the cell w/the best cost improvement index and the quantity that can be transferred to that cell.
Find the optimal solution using the MODI method.
Find a 90% confidence interval for the population average µ of the percentage of hospitals providing at least some charity care.
The US energy administration publishes data on residential energy consumption and expenditures in residential consumption survey: consumption and expenditures.
You are running a chi-squared test. If you have 5 groups with 3 characteristics each, what would your critical value be with an alpha of .25? a . Between 0 and 3.0
Discuss how the empirical rule helps explain the ways in which the values in a set of numerical data cluster and distribute. Regarding probability, discuss the differences between mutually exclusive events and collectively exhaustive events.
Define irregular component in time series and explain the differences between other components as well as its effects.
Find the sample size for the 95% confidence interval used to estimate the population proportion.
Construct a 99% confidence interval on the population mean height of all 1-year-old pine seedlings. What are the confidence limits? What statement can be made about the population mean height using the confidence interval?
What statistic (mean, median or mode) would you use to describe each aspect of the "typical" home? For example, you might use the MEAN for price, the MEDIAN for square footage.
If the average tax payer who makes $140,000 per year owes the government $18,200 with a standard deviation of $1500, and the IRS receives a 1040 tax documents from a customer who earned $140,000 that claims he only owes $12,000, should the IRS sus..
A random variable is normally distributed with a mean of 25 and a standard deviation of 5. if an observation is randomly selected a distribution, what value will be exceeded 10% of the time?
Suppose Abraham Lincoln had answered a survey questionnaire in which he indicated that he had not received a grade school diploma. The researcher found that Lincoln's educational score did not correlate with the expected variables. What was wrong?
A company operates four machines during three shifts each day. From production records, the data in the table below were collected.
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