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A cable television company is considering extending its services to a rural community. The company's managing director believes that there is a 0.50 chance that pro?ts from the service will be high and amount to $760,000 in the ?rst year, and a 0.50 chance that pro?ts will be low and amount to $400,000 for the year. An alter- native operation promises a sure pro?t of $500,000 for the period in question. The company may test the potential of the rural market for a cost of $25,000. The test has a 90% reliability of correctly detecting the state of nature. Construct the decision tree and determine the optimal decision.
the time between arrivals of customers at the drive-up window of a bank follows an exponential probability distribution
in a recent shipment of insulin syringes hospital administrators discovered eight percent were unusable due to defects.
To test the given claim using Single Proportion Z test.
What is the point estimate of the proportion of the population of employees who strongly dislike their current work experience?
The test statistic for a two-sided significance test for a population mean is z = -2.12. What is the corresponding P -value?
a survey of 1305 people who took trips revealed that 96 of them included a visit to a theme park. based on those survey
question an instructor graded a large number of midterm exams and she considers that the test scores are normally
The ACT is an exam used by colleges and universities to evaluate undergraduate applicants. The test scores are normally distributed. In a recent year, the mean test score was 21.1 and the standard deviation was 5.0.
question the water sports company soon will be producing and marketing a new model line of motor boats. the production
If the total weight of the two bags, X1 + X2 exceeds 105.4 pounds, a surcharge is added onto the shipping cost. What percentage of all shipments can be expected to result in a surcharge being added to the shipping cost?
Student volunteers in a weight loss project were randomly assigned to one of three diets. After 2 months on the diets, subjects were weighed and weight loss was recorded for each person.
doctors have developed three new procedures ab and c for treating certain types of cancer known as adenocarcinomas and
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