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A certain diagnostic test is indicative of problems only if a child scores in the lowest 10% of those taking the test (the 10th percentile). If the mean score is 150 with a standard deviation of 30, what would be the diagnostically meaningful cutoff?
What is the basic objective in a logistics design and analysis study? Is it normally a one-time activity?
What are the optimal values of A and B? What is the minimum cost and if the cost of B could be reduced to $42 per unit, how many units of B would be optimal? What would the minimum cost be?
Last year 130 of the 250 firms legally avoided federal income taxes. Construct a99% confidence interval for the difference in the groups.
How large a sample is needed to estimate a population proportion within 2.5% at the 99% confidence level if you have no reasonable estimate of the population
What's the period of time in Europe in which reactionaries ruled. During which there was a lot opposition and revolt from countries trying to establish their own freedom such as Poland and Greece.
In a random sample of 40 days, the mean tons/employee hour was 4.99. Assume σ = 1.14. Find a 95% confidence interval for the true mean tons/ employee hour.
In other words, the rate of cancer in the beer drinking group was three times that of the non-beer drinkers in this study. What important numerical information is missing from this report?
A sample of 3000 observations has a bell-shaped distribution with a mean of 82 and a standard deviation of 16. Using the empirical rule, find what percentage of the observations fall in the intervals x-bar ± 1s, x-bar ± 2s, and x-bar ± 3s
Suppose the variance of an IID sequence of random variables is formed according to. -Where µ is the sample mean. Find the expected value of this estimate and show that it is biased.
records show that the probability that it rains in our town on a single day is 0.35. if rain on different days
Determine the equation of the regression line relating y = Time Next to x = Duration. Write the equation.- What is the value of the slope of the equation? Write a sentence that interprets the slope in the context of these variables.
Which of the following best expresses the value of using percentages in data presentation? A. Provides for the calculation of marginals.
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