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5. A laboratory weights filters from a coal mine to measure the amount of dust in the mine atmosphere. Repeated measurements of the weight of dust on the same filter has a standard deviation of σ = 0.08 milligram (mg) and mean 123 mg. (a) If 3 weightings of this filter are made what is the distribution of this mean? What can be said about the mean and standard deviation of this distribution? (b) If 32 weightings of this filter are made what is the distribution of this mean? What can be said about the mean and standard deviation of this distribution?
What statistical test should be used to analyze these data - How can internal and external validity be increased in an experiment and briefly describe the type of information that should be in an introduction.
What is the latest possible time that Activity E can be started without delaying the completion of the project and what is the latest time that activity B can start without delaying the project
A researcher is asked to determine whether or not a productivity objective (in dollars) of better than $75,000 per employee is possible. A productivity test is done involving 20 employees. What conclusion would you reach? The sales are as f..
A statistics professor plans class so carefully that the lengths of his classes are uniformly distributed between 45.0 and 55.0 minutes. find the probability that a given class period runs greater than 50.75 minutes? find the probability of se..
1. the study you will evaluate for your assignment isbinge drinking and alcohol-related behaviours amongst pacific
The portfolio assets are inverted in the Dow Jones fund
An automobile manufacturer has problems with sticking accelerator pedals
The untreated population mean (those who did not receive the new teaching method) on the exam was p = 100. Using a two-tailed test and a = .05, test to see whether the scores on the math exam for those using the new teaching method was significant..
The College Board finds that the distribution of students
Construct the 95% confidence interval estimate of the mean number of migraine attacks for those treated with acupuncture.
Find the average time a plane must wait in line before itcan land.c.Calculate the average time it takes a plane to clear therunway once it has noti?ed the airport that it is in thevicinity and wants to land.d.The FAA has a rule that an air traf..
Outline two techniques which can be used to decide where to put SPC effort most effectively and state 3 ways in which the application of SPC can improve quality standards.
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