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The exercise problem the following information to figure prevalence and incidence rate:
Population of the city of Atlantis on March 30th, 2003 = 183,000.
Number of new cases of tuberculosis occurring between january 1st and June 30th, 1003 = 26
Number of active TB cases according to the city register on June 30th, 2003 = 264.
The annual demand for a product is 1,000 units. The company orders 200 units each time an order is placed. The lead-time is 6 days, and the company has determined that 20 unites should be held as a safety stock.
To test whether the significant difference between two proportion test using large sample test.
In 1992, FAA conducted 86,991 pre-employment drug tests on job applicants who were to be engaged in safety and security-related jobs, and found that 1,143 were positive.
Construct the 95% confidence interval for the proportion of students with at least one injury.
Q2 is dummy variable equal to 1 in second quarter and 0 otherwise; and Q3 is final dummy variable equal to 1 in third quarter and 0 otherwise. Determine the Base Quarter?
Given the large difference between the two measures of central tendency, which of the two would you rely on in describing the average claim cost and why?
Find out annual break-even volume for the Rolling Creek Textile Mill.
The standard deviation of the sample is $3,000. Interpret your findings.
What different types of variables are used in quantitative studies? Describe each type of variable and how they differ.
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.
If possible, determine a 95% confidence interval for average number of television sets in all 50,000 households. If this is not possible, describe why not.
A student scores 81 on a chemistry test and 75 on a history test. For the chemistry test, the mean was 70 and the standard deviation was 20. For the history test, the mean was 65 and the standard deviation was 8.
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