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A study followed 900,000 US adults from 1992 to 2008. At baseline, all participants were screened and determined to be cancer free and their body mass index (BMI) was calculated. Body mass index is a measure of obesity that is calculated using a person's height and weight. Subjects were separated into the following groups according to their BMI: (a) normal weight, (b) slightly overweight, (c) moderately overweight and (d) greatly overweight. 57,145 deaths from cancer occurred in the population during the follow-up period.
Calculate the cumulative incidence of deaths from cancer among the study population over the follow-up period.
a. 87.5%b. 6.3%c. 15.7%d. 57.1%
in an emergency the typical driver requires about 0.75 seconds to get his or her foot onto the brake. the distance that
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.
A researcher is estmating influence of treatment using sample selected from normally distributed population with mean of µ = 80 and standard deviation of σ = 20. Calculate power of test if researcher uses sample of n = 25 individuals.
the image of the public library is constantly changing and their online services continue to grow. usage of the
Find the mean center. What is the aggregate travel distance? Find the aggregate travel distance for each of the four grid points surrounding the mean center. In which direction(s) is the median center likely to be located?
What percent of the SAT verbal scores are less than 650 and if 1000 SAT verbal scores are randomly selected, about how many would you expect to be greater than 575?
statistics softwarea statistics professor has observed that for several years about 13 of the students who initially
two random variables x and y have the joint distribution p0 0 0.2 p0 2 0.3 p1 1 0.1 p2 0 0.3 p 2 2 0.1 and px y 0
Do you believe the results of the simulation correspond to the best policy? What is the expected number of times you would win the car using the two strategies? Does the simulation back this up?
Many different kinds of data can be modeled using exponential and logarithmic functions. For example, exponential functions have been used by Thomas Malthus to describe the growth of human populations.
q1. one hundred policyholders file claims with stressfree insurance. ten of these claims are fraudulent. claims manager
A woman sells an average of 300 books per month, with a standard deviation of 50. Over the next ten years, how many months will she sell more than 375 books?
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