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Question: For Class Discussion: Guns and Homicides at Home The news source read as follows: Challenging the common assumption that guns protect their owners, a multistate study of hundreds of homicides has found that keeping a gun at home nearly triples the likelihood that someone in the household will be slain there. The study, published in New England Journal of Medicine, studied the records of three populous counties surrounding Seattle, Washington, Cleveland, Ohio, and Memphis, Tennessee. The counties offered a sample representative of the entire nation because of the mix of urban, suburban, and rural communities.
Although 1860 homicides occurred during the study period, the team looked only at those that occurred in the homes of the victims-about 400 deaths. The researchers found that members of households with guns were 2.7 times more likely to experience a homicide than those in households without guns. In nearly 77 percent of the cases, victims were killed by a relative or someone they knew. In only about 4 percent of the cases were victims killed by a stranger. In most of the remaining cases, the identity of the persons who committed the homicides could not be determined. (Washington Post, 17-23 October 1993)
What does it eat? How does it affect the food? Is the microorganism killed off before human consumption or is it still alive and active in the food?
Markland Manufacturing intends to increase capacity by overcoming a bottleneck operation by adding new equipment. Two vendors have presented proposals.
a study found a strong positive correlation between ice cream consumption and the number of violent crimes committed
Incoming phone calls generally are thought to be Poisson distributed. If an operator averages 2.2 phone calls every 30 seconds.
A senator wishes to estimate the proportion of the united states voters who favor abolishing the electoral college. how large a sample is needed in order to be 90% confident that the sample proportion will not differ from the true proportion by mo..
The candy company claims that 10% of the M&M's it produces are green. Suppose that the candies are packaged at random in small bags containing about 50 M&M's. A class of elementary school students learning about percents opens several bags, counts th..
Suppose that Archie does, in fact, make it to the test on time. What is the probability that he took the bus? Round your answer to two decimal places.
Suppose you are working with a data set that is normally distributed, with a mean of 200 and a standard deviation of 47.
You conduct 8 Bernoulli trials for which the probability of success is 0.85. What is the probability that you will obtain exactly two successes?
a financial analyst claims that the return rate of a 15-year bond has a standard deviation of 6.8. determine whether
Biting an unpopped kernel of popcorn hurts! As an experiment, a self-confessed connoisseur of cheap popcorn carefully counted 773 kernels and put them in a popper.
1. Find the minimum sample size n needed to estimate µ for the given values of c, s, and E.
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