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What is the 25th percentile of a chi squared distribution with 20 degrees of freedom? What symbol is used to denote this value?
At α = 0.01, is the degree of certainty independent of credits earned?
Following data from an x bar chart, is the process capable (capability index>1.33)?
Search the library for a scholarly journal article of a study that presents the results using correlation analysis. Summarize the article, explain how the correlation was used, and the value of correlation analysis.
An environmentalist estimate that the mean waste recycle by adults in the country is more than 1 pound per person per day. You want to test this claim, you find that the mean waste recycled per person per day for a random sample of adults in the c..
Give an example of a hypothesis test you could perform at work or at home. State what the Null and the Alternative hypotheses would be in your test.
In 1990, the population of Austin, Texas, was 494,290. During the next 10 years, the population increased by about 3% each year.
Using a test, 80% of Down's Sydrome cases can be identified, while 5% of normals are detected as positive. What is the sensitivity and specificity of the test?
At alpha = 0.05, is there enough evidence to conclude that proportions vary from those in the study?
On the same chart, produce a graph showing the original probability mass function, and a line graph showing your selected continuous probability density function.
Describe what type of control chart you can use and how do you calculate the control limits (provide formula) to check if the calculate the control limits in this organization is in control.
Last fall, a sample of n = 36 freshman was selected to participate in a new 4-hour training program designed to improve study skills.
The Quick Change Oil Company has a number of outlets in the Seattle area. The daily number of oil changes at outlet in past twenty days are:
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