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Q1) When consider the following risk ratios from a cohort study on the association between diabetes and glaucoma:
Crude: 1.88
Race/ethnicity-adjusted: 1.56
Race/ethnicity-stratified (White participants): 1.49
Race/ethnicity-stratified (Black participants): 1.99
Race/ethnicity-stratified (Asian participants): 1.35
Race/ethnicity-stratified (Hispanic participants): 1.78
Race is:
If the random variable X has the mean μ and the standard deviation σ, show that the random variable Z whose values are related to those of X by means of the equation
Calculate a value of lambda using the data from last week concerning the news networks and the reporting practices. Compare your resulting lambda to the resulting chi-square from last week.
Why are scattered plots necessary when investigating the relationship between quantitative variables?
What is the probability that the sample mean would differ from the true mean by less than 1.1 dollars if a sample of 385-gallon pails is randomly selected?
Assuming a sample size of? 1,000 for this? poll, construct a 95% confidence interval for the true percentage of all adults who would choose to sleep
The following data represent the number of defective chips produced on the last 15 days: 121, 133, 98, 85, 101, 78, 66, 82, 90, 78, 85, 81, 100, 75, 89. Would you conclude that the process has been in control throughout these 15 days? What control..
Had the model parameters not been given, so that their values must be determined from the data, repeat the test in (i) and compare the results. What does this imply about the importance of obtaining independent parameter estimates before carrying ..
The unemployment rate in a city is 14%. If 10 people from the city are sampled at random, find the probability that more than 1 of them is unemployed.
Movie ratings The movie rating system we use today was first established on November 1, 1968. Back then, the possible ratings were G, PG, R, and X.
use the mann-whitney table to find the critical values. for a left -tailed or two-tailed test you will alsoneed the
Physical Science The number of active coal mines in Utah has steadily decreased since 1960. However, peak production occurred in 2001.8 One measure of mine.
A director of an agency is hiring temporary help. In making plans, he has to know whether there isi any difference in the use of the agency at different seasons of the year.
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