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Many decisions are simple, preprogrammed, or already solved. For example, retailers do not have to think long to decide how to deal with a new customer. Some operations- research models provide "ready-made" decisions, such as finding an optimal inventory level using an order-quantity formula or determining an optimal production mix using lin ear programming. Contrast these decisions with unstructured or strategic decisions, such as choosing a career or locating a nuclear power plant. What kinds of decisions are appro priate for a decision-analysis approach? Comment on the statement, "Decision making is what you do when you don't know what to do." (For more discussion, see Howard 1980.)
Multiply by 50 to get the middle 95% of the distribution of the gamblers winnings on nights when he places 50 bets. (d) What is the probability that the gambler will lose money if he makes 50 bets?
probability values based on normal distribution.the old exit exam followed a normal distribution with micro 500 and
test scores on a university admissions test are normally distributed with a mean of 500 and a standard deviation of
If the top 15% of the test scores are usually good enough for admission to law school, find the cut off score for gaining admission.
What conclusions can you reach about the relationship between sales and hours of training? What sorts of business implications does this have?
why is a z-score range -3 to 3? if a normal distribution is not assumed can a z-score still be used? why or why
For binomial distribution among given values for n as well as p state whereas or not it is suitable to use normal distribution as an approximation.
what type of sampling is being employed if the country is divided into economic classes and a sample is chosen from
1 does correlation equal causation? does the strength of correlation depend on the direction of the relationship? what
PC World rated four component characteristics for 10 ultraportable laptop computers: features; performance; design; and price. Write down the estimated regression equation
Both intervals were calculated from the same sample data. The confidence level for one of these intervals is 90% and for the other is 99%. Which of the intervals has the 90% confidence level, and why?
A survey covering 0 different suburbs in Dallas found the average price of gasoline to be $3.924 per gallon with a population standard deviation of $0.053. What critical value shoiuld be used to test the claim using a = 0.01?
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