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What is the coefficient of determination? If an r=0.8, what is the coefficient of determination?
In a mobile phone shop on a Sunday morning, out of n = 77 customers x = 19 buy a mobile phone. What is the 95% confidence interval for the proportion of customers buying a mobile phone?
Find the standard deviation for the given sample data. Round your answer to one more decimal place than is present in the original data.
in a certain city 30 of the families have a mastercard 20 have an american express card and 25 have a visa card.
for the high school outreach project that i direct i would like to know if we are having any impact on the high school
According to the Bureau of Economic Analysis, the savings rate of American households, defined as a percentage of the disposable personal income, was 4.20% in 2009.
calls to a customer service center last on average 1.8 minutes with a standard deviation of 1.5 minutes. an operator in
That they all had false positive results. Is it unusual to arbitarily choose 3 subjects without replacement and get three results which are all false positive results? Describe.
They tested a random sample of 40 batteries using a special device designed to imitate real-world use and recorded data on battery lifetime. Determine the sample mean (in minutes).
conduct a hypothesis test to determine if the proportion of business students at bayview university who were involved
computing the mean and standard errors of sampling distribution.using the central limit theorem find the means and
Which conditional distributions do these statistics refer to, those of y at given catagories of x, or those of x at given categories of y? Set up a table with race of murderers as rows and race of victims as columns, showing the two conditional di..
many elementary schools have implemented a daily sustained silent reading period during which students faculty and sta
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