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A national survey is conducted to assess the association between hypertension and stroke in persons over 55 years of age. Development of stroke was monitored over a 5 year follow-up period. The data are summarized below and the numbers are in millions.
a) Compute the incidence of stroke in persons over 55 years of ageb) Compute the relative risk of stroke comparing hypertensive to non-hypertensive personsc) Compute the odds ratio of stroke comparing hypertensive to non-hypertensive persons
Draw the pmf of the Poisson distribution that results when the parameter α is equal to the following:
A survey of Ohio University students was conducted to determine if there was a particular Green that was desired by students to live on. A sample of students responses are reproduced below. Do students prefer a particular Green? Use critical value..
Which represent errors of estimation for individual points, an alternative way to examine the error of the regression model using a single measurement is to determine the sum of all the residuals.
The number of shark attacks and deaths over a recent 5- year period is shown. Find the mean, median, mode, midrange, variance, and standard deviation for the date. Which data set is more valuable?
Four different assembly processes were under consideration. Sixteen workers were randomly assigned to the four processes, eight per process. The number of correctly assembled units in an eight-hour work shift was recorded:
Suppose you toss a die 100 times in a row. What is the probability that you see 4 spots between 10 and 20 times?
Convert Alisha's grandmother's score to a z score among the distribution of exercise capacity in Americans over seventy years old. Who has a relatively longer exercise capacity compared to her peers-Alisha or her grandmother?
Explain the value of test statistic using t distribution for the given value. Illustrate value of the t test statistic if you are testing a hypothesis.
Determine change in average number of weekly viewers from to?
The following is sample information. Test the hypothesis at the .05 significance level that the treatment means are equal.
A pharmaceutical company has developed a drug that is expected to reduce hunger. To test the drug, three samples of rats are selected with n=10 in each sample.
You are given an annual time series with 40 consecutive values and asked to fit a fifth-order autoregressive model.
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