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A medical study recorded the following information on 75 randomly chosen subjects. In the space provided, describe the variable type as qualitative or quantitative. The variable level will be ordinal, nominal, continuous or discrete;
Weight (pounds)
Race (white, black, Asian, Hispanic, Native American)
Number of doctor's visits in the past year
Smoker (yes/no)
Body Temperature oF
Income level (very low, low, medium, high, very high)
a carton of eggs assume a carton contains a dozen eggs contains two eggs that are cracke. in a quality effort two eggs
A person decides to take a telephone survey of 40 families in the 721-exchange area (sometimes referred to as prefix). You want an excellent representation of all subscribers in the exchange area.
the diameters of grapefruits in a certain orchard are normally distributed with a mean of 5.96 inches and a standard
If our decision in a hypothesis test is to fail to reject the null hypothesis, then do we know that the null hypothesis must be true?
Thirty-five sophomores, 37 juniors and 37 seniors are randomly selected from 247 sophomores, 413 juniors and 348 seniors at a certain high school. What sampling technique is used?
Compute the sample variance and the sample standard deviation for these data (to 2 decimals).
A researcher investigating sex role stereotypes and occupational aspirations drew a random sample of 125 female university students.
Determine whether each of the is an experiment or an observational study. Also identify the explanatory and response variables.
lies damned lies and statistics is a phrase describing the persuasive power of numbers particularly the use of
What are examples of the populations parameters we are trying to estimate for sample data?
Describe how a domestic fast food chain with plans for expanding into China would be able to use a forecasting model.
Compute the pdf of continuous random variable Z where Z = X + Y and X is a continuous random variable uniformly distributed on [0, 2] and Y is a continuous random variable uniformly distributed on [0, 4]. Assume that X and Y are independent.
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