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The 2011 gross sales of all firms in a large city have a mean of $2.3 million and a standard deviation of $0.6 million Using the Chebysev's theorem, find at least what percentage of firms in this city had 2011 gross sales of $1.1 to $3.5 million.
What is the 95% confidence interval for the proportion of the population of employees who strongly dislike their current work experience?
Calculate the Measures of Center and Measures of Variation for the following data set representing the chest size of 20 bears in inches.
Can we conclude from this that most workers there earn between $25 and $35 per hour? Is this the right interpretation for the margin of error?
The number of text messages that Debbie's son Jeff sends and receives a month follows the normal distribution with a mean of 4,580 (I am not making this up!) and a standard deviation of 550. What is the probability that next month he will send and..
A Diffusion Model - Model the diffusion of electrons and holes across a potential barrier in an electronic device as follows. - Find the transition probabilities,.
An education task force looking at poverty levels in the United States has collected data for each state and the District of Columbia on the total number of people below the poverty level and the number of adults over the age of 25 who did not g..
The Department of Education would like to determine if there are gender differences in the performance of twins on the state mandated mathematics examination. As a result, they have collected data on twelve sets of twins that are male and female. ..
Determine the completion time and standard deviation (σ) for project roundoff the standard deviation to the nearest hundredth: two decimal places.
Let Σ be a (p x p) partitioned covariance matrix. The coefficients that maximize the correlation between the linear combinations u =aTX(1) and v = βTX(2) are the latent vector solutions of the systems of equations.
a tire manufacturer wants to determine the inner diameter of a certain grade of tire. ideally the diameter would be
What is them 98% confidence interval for the average number of minutes it takes to create a test question?
Why must researchers ensure that their experimental groups are roughly equivalent before manipulating the independent variable?
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