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1. Discuss the strengths and weaknesses of correlational and regression studies; discuss concepts such as positive and negative correlations, correlation coefficients, confounding, and causality.
2. You read an interesting study in the paper that says that during any given year, statistics show that ice cream consumption and the crime rate are correlated - as ice cream consumption rises, the crime rate rises; as ice cream consumption drops, so does the crime rate. Explain this spurious correlation.
Developing project network using AOA that determines completion times.
Calculate the sample mean and sample standard deviation.
When the non-parametric statistics utilized? Write down an example.
Which is the estimated or dear proportion of defective cups in the population?
Give a brief definition and an example of the following: What does the correlation coefficient r describe? What about r squared?
Assume that each shipment contains a random sample of bearings. a. What is the probability that a given shipment is acceptable?
Micron Electronics makes both desktop and laptop personal computers that they sell directly to customers by phone or over the Internet.
Pilot sample of n = 50 tires illustrated sample standard deviation equal to 4,000 miles. Based on this information, required sample size is?
We assume that we have selected two independent random samples from populations having proportions p 1 and p 2 and that p-hat 1 = 800/1000 and p-hat 2 = 950/1000
The standard deviation was 2. At α = .10, is the number of years' experience of the taxi drivers really less than the taxi company claimed?
Dr. Richmond, a psychologist, is studying the daytime television viewing habits of college students.
Estimate the values using multiple regression models. An air conditioning as well as heating repair firm conducted a study to determine if the outside temperature, Illustrate the forecasted monthly electric bill.
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