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In a transportation problem with 5 supply points, 3 demand points, and total supply equaling total demand, the number of decision variables will be:
A) 5
B) 8
C) 15
D) 125
Find the confidence interval for the mean price, μ, of all dealer sticker prices of new cars: for a confidence level of 90% in thousands of dollars:
Motorola takes two weeks to supply an order. if the store manager is targeting a fill rate of 99%, what safety inventory should the store carry? What should its ROP be?
Using a significance level of 0.05, perform a hypothesis test to see if the workers are right, and you need to hire more help. Write your hypotheses, calculate your test statistic and decide whether or not to reject your null.
The means appear to be very close, but not the variances. At α = .05, is there a difference in variances? Show all steps clearly, including an illustration of the decision rule.
A person runs one mile to his house as fast as he can. It is equally likely that he will run at an average speed of 3 miles per hour, 6 miles per hour, and 9 miles per hour.
because only two of the seven regression coefficients are statistically significant. Yet in some initial trials the expanded model is giving more precise sales predictions than the smaller model. The reasons for this anomaly are now being investig..
A pie chart shows the market shares of cola products. The "slice" for Pepsi-Cola has a central angle of 90 degrees. What is its market share.
You're in charge of an experiment to evaluate a treatment which is advertised as being 90% effective at killing a particular insect. You plan an experiment in which the treatment is tested on 200 insects.
How do we use a least squares regression line? What is the range for the coefficient of determination?
While dealing with 16 students, suppose that the alternative hypothesis has been one-sided and that it was set as Ha :
Find out the cheapest way of manufacturing today's batch of NasaMist.
The records show that 8% of the items produced by a machine do not meet the specifications. Use the normal approximation to the binomial distribution to answer the following questions.
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