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The Operational experts of Woodbridge Electric have announced a breakthrough in the production process and the mean of the same bulb has increased to 9000 hours and the standard deviation has decreasing to 200 hours (again assume a normal distribution). Using the same 2.5% constraint how does this affect the warranty? Is this good news or bad for the customers and the firm?
An experimenter wants to conduct a hypothesis test on a claim that there was no differencebetween two population means. That is, H0: μ1 - μ2 = 0. Which of the following 95% confidenceintervals on the difference, μ1 - μ2, would lead to rejectio..
Produce a short report to update your manager on both the method and results of your analysis and the introduction od 'Six Sigma'.
The actual amount of icing sugar that a filling machine puts into "180 gram" jars is well modeled as a normally distributed random variable with σ = 1.88 gram. If it is desired that only 1.2% (i.e. 0.012) of these jars are to contain less than 180.00..
A project manager at System Design Corporation
Give the 95% confidence interval.
Calculate and interpret a confidence interval at confidence level approximately 95% for the difference between population mean height for the younger women and that for the older women.
The mean weekly income of residents of one state is $570. A random sample of 12 residents of one small town in the state yielded the following weekly income in dollars
question 1a busy landscaping supplies company sells wood chips for garden mulch. the mulch is sold by the cubic metre
Locate the original poll, summarize the poling procedure (background on how information was gathered), the sample surveyed.
The Mann-Whitney test, or none of these tests?
If the budget analyst wanted to build a regression model using only two independent variables to predict nursing salaries, what variables should be used?
Develop a model for the Total Cost to put on the seminar. Let x represent the number of students who enroll in the seminar - develop a model for the Total Profit if x students enroll in the seminar.
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