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An insurance company believes that people can be divided into two classes -- those that are accident prone and those that are not. Their statistics show that an accident-prone person will have an accident at some time within a fixed 1-year period with probability 0.3, whereas this probability decreases to 0.2 for a non-accident-prone person. Assume that 10 percent of the populations is accident prone.
(a) What is the probability that a new policy holder will have an accident within a year of purchasing a policy?
(b) Suppose a new policy holder has an accident within a year of purchasing a policy. What is the probability that he or she is accident prone?
Please show all work.
a financial analyst claims that the return rate of a 15-year bond has a standard deviation of 6.8. determine whether
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Illustrate your answer with a histogram of the sample's scores and sketches of the population distribution and the distribution of means, showing the t score and cutoff points for significance.
Do you favor recycling in your neighborhood
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In a certain countrywide school district, a survey of 350 students showed that 28% carried their lunches to school. Find the 95% confidence interval of the true proportion of students who carried their lunches to school.
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