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Find a newspaper article or Internet report about a study that involves two quantitative variables. Besides providing a copy of the article or report, tell how the data were produced-was it an experiment or an observational study? Which variable is explanatory and which is response? Is there a positive or negative relationship between the two variables? Does the report suggest that the relationship is strong or weak? Tell if results are being reported for a sample or for an entire population, and the number of individuals studied, if known. Tell if there is reason to suspect bias that arises if the sample is not representative, or bias in the design for assessing the variables' values.
q1. dun amp bradstreet reports among other things information about new business incorporations and number of business
How strong is the association between weight and price for these coins? Please give both a number and its interpretation in words.
The local operations manager for the IRS must decide whether to hire 1, 2, or 3 temporary workers. He estimates that net revenues will vary with how well taxpayers comply with the new tax code.
suppose that a random variable x has the uniform distribution on the interval 01. determine the p.d.f. of a x2 b -x3
How far away from the mean is she (or how many standard deviation units away from the mean is she) and find the interquartile range of this distribution of X.
You don't have to use any outsource resources for this work. Just read the article and answers the questions mention below in a form of essay.
the distribution of the sum of independent n? ?2 random variables isa. always approximately normalb. always exactly
Based on comparing the computed statistics to the critical value which of the following is true - study is designed to investigate whether there is a difference in response to various treatments in patients with rheumatoid arthritis.
After a change was introduced in the process of manufacture of these cables, the breaking strengths of a sample of eight cables showed a standard deviation of 300 lb. Investigate the significance of the apparent increase in variability, using sign..
in the basic economic order quantity eoq model at q the estimated total annual holding costa. is less than the
consider the following.a the empirical rule indicates that we can expect to find approximately what percentage of the
Garden. A company selling vegetable seeds in packets of 20 estimates that the mean number of seeds that will actually grow is 18, with a standard deviation.
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