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The following table represents a summary by state for Medicare enrollment (in thousands) for 15 randomly selected states in 1998 (source: Statistical Abstracts of the United States, 1999).
665 3,757 623 757 541 448 478 2,728 103 771224 86 623 1,373 713
(a) Test to determine whether the data are normal.
(b) If not, try a suitable transformation to make the transformed data approximately normal.
(c) Test for outliers. If an observation is extreme, would you classify it as an outlier?
Compute fraction of the employees cost between $1,500 and $2,000 per year? Evaluate percent that didn't have any dental expense.
a brand name has a 40 recognition rate. assume the owner of the brand wants to verify that rate by beginning with a
If the service manager wants to 95% confident that the overall time is correctly estimated, with a 3 percent probability of error, what sample size should be taken.
a presidental candidate conducts a poll of likely voters in ohio to determine their mean ageanswer the following1.
suppose we roll a fair die two times. a. how many different samples are there? b. list each of possible samples.
a tour operator charges rs 136 per passenger for 100 passengers with a discount of rs 4 each for 10 passengers in
What is an example of two variables that are likely to be correlated because they are both changing over time?
Which of the following models are appropriate to forecast a time series whose amplitude increases over time?
A store has determined that 25% of all sales are credit sales. A random sample of 75 sales is selected. What is the probability that the sample proportion will be:
A researcher computes the mean, the median, and the mode for a set of n = 50 responses to this question. Which of the following statements accurately describes the measures of central tendency?
an article reported the following data on oxygen consumption mlkgmin for a sample of ten firefighters performing a
Calculate the population mean and population standard deviation.
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