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Reported crimes are believed to occur at random at different rates for different types of crime. the incidence rate for a particular type of crime in city B is 3.0 per week. Show that the probability of at least 17 crimes of this type occurring in city B in a 4-week period is 0.10
Assuming that numbers of crimes in 4-weekly periods are independent, what is the probability that there will be at least 17 in the last three of the next six 4-week periods? explain your answer.
Which trend model do you think is best to make forecasts for the next 3 years? Why? (e) Use each of the three fitted trend equations to make a numerical forecast for 2007.
A jeweler at Tiffany & Company computes the value of the linear correlation coefficient for pairs of sample data consisting of Tiffany prices for gold wedding rings and the corresponding prices at a discount store.
Standard deviation of 30 lb. Find the percentage of such weights between 190 lbs and 225 lbs. among 400 men aged 18 to 74, how many are expected to weigh between 190 lbs and 225 lb.
A circus clown at the top of a 60-foot platform is playing catch with another clown on the ground. The clown on the platform drops a ball at the same time as the one on the ground tosses a ball upward at 80 ft/sec.
Mathml equation = $32,000 and mathml equation = $3000. If 100 teachers are randomly selected, find the probability that their mean salary is greater than $32,500.
What is the probability that a simple random sample of automobile insurance polocies will have a sample mean within 25.
the management of macij corporation is trying to determine the amount of each of two products to produce over the
A humane society claimes that less than 36% of U.S. households own a dog. In a random sample of 396 U.S. households, 151 say they own a dog. At x=0.04, is there enough evidence to support the society's claim?
A psychologist determined that the number of sessions required to obtain the trust of a new patient is 1, 2, and 3. Let x be the random variable indicating the number of sessions required to gain the patient's trust. The following probability fu..
A health and safety committee is to be selected from all the people who work at a local factory. The committee is to consist of four members selected randomly from a list of ten names.
Compare and contrast how the psychologist as a detective (a researcher) solves a problem to how a non-researcher solves a problem.
The margin of error for polling results is typically determined as the half-width of a 95% confidence interval. With respect to a particular ballot proposition
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