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An unknown distribution has a mean of 80 and a standard deviation of 12. A sample size of 95 is drawn randomly from the population.
Find the sum that is1.1standard deviations below the mean of the sums?
A technician services machines as companies in the Phoenix area. Depending on the type of malfunction, the service call can take exactly 1, 2, 3, or 4 hours. The different types of malfunctions occur at the same frequency.
Grindit & Floggit Ltd. make customized Widgets at a cost of $150 per unit of which 3% (on average) happen to be out of tolerance. Up to 115 Widgets can be produces in one continuous run whose set up incurs an additional cost of $10 000.
Nicotine in cigarettes. To determine whether the mean nicotine content of a brand of cigarettes is greater than the advertised value of 1.4 milligrams, a health advocacy group tests
a. Use PERT to identify the expected time and variance for each activity. b. What is the critical path? c. What is the expected time and variance of the critical path?
When you choose a place to live, what objectives are you trying to accomplish? What makes some apartments better than others? Would you rather live close to campus or far ther away and spend less money? What about the quality of the neighborhood? ..
steve and his friends are relaxing at a local tavern. the number of drinks that steves table receives is poisson
Write up your results by using scientifically recognized form.
1.below is a normal plot of residuals from a regression. does the plot indicate any problems with the assumption that
Assume that female students' heights are normally distributed with a mean given by µ = 67.2 in. and a standard deviation given by σ = 3.6 in.
Refer to the Real Estate data, which report information on homes sold in the Goodyear, Arizona, area during the last year. Develop a 95% confidence interval for the mean selling price of the homes.
Quantitative Methods Assessed Coursework. Find the correlation coefficients for business generated and psychometric test score, business generated and experience, and business generated and qualifications
A high-performance jet airplane is shown in Figure DP10.7 (a), and the roll-angle control system is shown in Figure DP10.7 (b). Design a controller Gc(s) so that the step response is well behaved and the steady-state error is zero.
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