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Yule ran a regression of changes in pauperism on changes in the out-relief ratio, with changes in population and changes in the population aged 65+ as control variables. He used data from three censuses and four strata of unions, the small geographical areas that administered poor-law relief. He made a causal inference: out-relief increases pauperism. To make this inference, he had to assume that some things remained constant amidst changes. Can you explain the constancy assumptions?
if npgt and nqgt5 estimate pmore than 4 with n12 and p0.7 by using the normal distribution as an approximation to the
An experiment was carried out to assess the effects of four tomato varieties and four planting densities on yield. There were 64 plots, and each of the 16 factor combinations was randomly assigned to 4 plots
Experienced relief of both itchy eyes and skin rash. What is the probability that a patient who takes the drug will experience relief of at least one of two symptoms?
A USA Today Snapshot summarized the results of a 'State of the Kid' survey conducted by the Highlights magazine. A total of 500 children were surveyed, 200 were considered young kids (with ages 9-10 years old) and 300 were older (with ages 11-14 yea..
1. A developer wants to claim that his new "green" home design results in lower electricity use than in conventional homes. His 2,000 square foot model home uses 1,200 kilowatt hours per month on average.
What is the opportunity loss of spending 4 hours per week on average studying for the exam when the exam turns out to be easy?
Assuming that the life of bulbs follow Normal distribution, what is the probability that a randomly selected bulb will: Fail within 1200 hours? Survive between 1350 and 1650 hours?
Suppose that a model for the joint distribution of these rvs is a bivariate normal distribution.
How tall would the door need to be if Boeing wanted to ensure 95% of men could fit through the door without bending?
clark heste is an industrial engineer at lyones products. he would like to determine whether there are more units
Provide two examples for each source of measurement error and include how each example might likely influence research results.
Explain the concept of "Regression Analysis", its types (3 types at least), applications and usefulness. Provide real application of its usage.
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