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How do you get a Z score from a standard deviation?
Can you please explain the 1.5 sigma shift they use in determining process sigma?
How do you find a z score such that 8% of the area under the curve is to the right of Z?
What proportion is Less than 52. With mean of 67.56 and standard deviation of 25.7?
What is the Z score of a 98% confidence interval?
Would the method described above be a good way to determine which team was taller (explain why or why not)?
Ffind the probability that the face showing up a six turns up between 10 and 30 times. Find the probability that the sum of the face values of the 100 trials is less than 250.
Formulate an 84% interval estimate for the true proportion of employees within one year of retirement in the entire corporation.
Find the 90%, 95% and 99% confidence intervals for the proportion of all voters who favor the issue. How many more voters should we include in the sample if we need to reduce the margin of error by half?
If a technical breakthrough occurred that raised the profit per unit of X 1 to $3, would this affect the optimal solution?
The store manager is under impression that his sales people do more business if they score higher on the social skills test which was administered this year. 5 victims were selected at random. Below, the results are X =test score, Y =weekly sales ..
The sample has a mean weight of 15.3 pounds and a standard deviation of 1.9 pounds. Create a 95% confidence interval estimate for the true mean weight of all packages received by the parcel service.
The president of a certain university makes three times as much money as one of the department heads. If the total of their salaries is$ 200.000, find each worker's salary
Suppose wheat and sugar are two basic ingredients necessary to bake two items: a loaf of bread and a muffin. A baker has 25 pounds of wheat and 5 pounds of sugar.
What is meant by a probability distribution? Discuss how you could use one of the text probability distribution at your workplace to help solve a business problem.
If the standard deviation of the amount spent on books is $8.42, find these probabilities for a randomly selected American. Put answer in percent form.
You wish to do a community needs assessment survey of a community to find out how much office space is needed by professionals in the community.
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