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"Crime Finds the Never Married" is the conclusion drawn in an article from USA Today (June 29, 2001). This conclusion is based on data from the Justice Department's National Crime Victimization Survey, which estimated the number of violent crimes per 1000 people, 12 years of age or older, to be 51 for the never married, 42 for the divorced or separated, 13 for married individuals, and 8 for the widowed. Does being single cause an increased risk of violent crime? Describe a potential confounding variable that illustrates why it is unreasonable to conclude that a change in marital status causes a change in crime risk.
Two semiconductor factories are being compared to see if there is a difference in the average defect rates of the chips they produce. In the first factory, 250 chips are sampled. In the second factory, 350 chips are sampled. The proportions of def..
What are the respective sample means on "feelsafe" (Importance of Safety) for males and females from the SPSS Tables Set-1, when visiting a sports bar?
1. the american auto association reports the mean price per gallon of regular gasoline is 3.45 with a population
Base on a survey of over 10,000 households, the number of televisions in the home was recorded as given in the table below. Based on the data, find the expected number of televisions in a home.
a pair of fair six-sided dice are tossed independently of each other.a list the sample space of this experiment.b
the random variable x has a binomial distribution with parameters n100 and p0.10.what distribution model would be
you have five employees with hourly wages listed with. the standard deviation of the population is 2.80.6 8 8 11 14a.
The MSU- SASE (MSU- System admission Scholarship Examination) scores of sample 9 students who joined the university during the second semester of SY 2009-2010 were found to be 67, 92, 90, 79, 69, 62, 59, 69 and 95. Compute the SASE score
The expected peak expiratory flow rate in adults is 300 with a standard deviation of 50. how many subjects should be enrolled to ensure 80% power to detect a difference of 15 liters per minute with a two-sided test and significance level of 0.05?
A survey covering 0 different suburbs in Dallas found the average price of gasoline to be $3.924 per gallon with a population standard deviation of $0.053. What critical value shoiuld be used to test the claim using a = 0.01?
a population of 1000 voters contains 330 republicans 620 democrats and 50 independents and members of other parties. a
If Liverpool won twice as many games as they lost, how many games did they win, draw and lose - Can you prove that some value of the differences must occur at least 10 times?
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