<span>A Decision Support System is a computerized information system that facilitates an organization's decision-making approach. It enables the company to analyze and plow through a massive stream of data, compile the results which could be used to solve problems and make better informed decisions.
They play a central of roles in a business environment. They help an organization or business keep inventories of information assets (including legacy and relational data sources, cubes). They also help to compare and contrast sales figures between one period and the next. Dss help in projeected revenue estimate based on product sales assumptions. They also assist in theoretical and technical issues in the support of borderline decision</span>
Trader joes differentiate itself from competitors by offering top-quality foods obtained through sustainable agriculture. This business strategy implies that trader joes focus on gaining a market share and making up the loss in margin through increased sales.
According to the Cost Leadership article, Trader Joe's focuses on low-cost, high-quality products to attract customers' attention. Trader Joe's is a very small store less than 10,000 square feet.
Just Right Airline is probably sitting in the middle because it's basically trying to reconcile different strategic positions (high-quality features versus low price). Other airlines consistently pursue either differentiation or low-cost strategies.
Marriott has reduced its cost structure by distributing its manufacturing facilities across multiple hotel types, increasing the diversity and differentiated appeal of its hotel line.
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Answer: The minimum number of students you need if you want the margin of error to be 5% IS 278.
Explanation:
Cochran’s Sample Size Formula gives the minimum number of students as 
Where:
e is the desired level of precision (i.e. the margin of error),
p is the (estimated) proportion of the population which has the attribute in question and q is 1 – p.
The z-value for 95% confidence interval is found to be 1.96 in a Z table.
Assuming that half of the teenagers favor the elimination of a curfew: this gives us maximum variability. So p = 0.5 and q=0.5.
Then 
Rounding up, 
But considering that 1000 is a small population, we can modify the sample size we calculated above formula by using this equation:
Where s is the adjusted sample size, n is the original sample size we calculated and N is the population size.
