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Find a newspaper article or Internet report about a study that involves two categorical 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? Report, if known, which group apparently has the highest percentage in the response of interest and which has the lowest. 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 variable's values. If there is enough information provided, construct a two-way table of counts.
one sample has n 8 and ss 21 and a second sample has n 8 and ss 35. what is the pooled variance for the two
8500 is deposited into an account paying 8% annually, to provide four annual equal amount withdraws beginning in one year
A medical school claims that more than 32% of its students plan to go into general practice. It is found that among a random sample of 130 students, 46 of them plan to go into general practice.
for a certain type of electronic component the lifetime x in thousands of hours has an exponential distribution with
1write your response to the following question.we often hear you can lie with statistics. this is one way of saying
The relationship d = 5000 - 25p describes what happens to demand (d) as price (p) varies. The price can vary between $10 and $50. What is the mathematical expression for total revenue (TRV).
Blood types Sixteen percent of the population of the United States has a negative Rh (Rhesus) factor in their blood, and the remainder have a positive Rh factor
In his management information systems textbook, Professor David Kroenke raises an interesting point: If 98% of our market has Internet access.
In a particular town 10% of the families have no children, 20% have one child, 40% have two children, 20% have three children, 10% have four.
discuss the following statements and explain why they are true or falsea increasing the number of predictor variables
find the expression for velocity profile the mass flow and heat transfer rates of air due to natural convection in a
Such tv are randomly selected and checked to determine what is being watch. Would it be unusual to find that 954 of the 2500 tvs are tuned to eyewitness news?
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