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Question: A 2 x 2 contingency table and a hypothesis test of the difference between two population proportions can be used to analyze the same data set. However, besides all the similarities of the two methods, the hypothesis test of the difference between two proportions has two advantages. Identify these advantages.
In a prospective study, Data collected extensive information on incidence of coronary heart disease (CHD) among smoker and non-smoker individuals.
The least squares simple linear regression line minimizes the sum of the vertical deviations between the line and the data points.
Let"s consider the very large database of individual incomes from the Bureau of Labor Statistics as our population. It is strongly right skewed. How large a sample size?
What type of error has possibly been committed? Explain the error in ordinary language.
If the interval of tiem between eruptions is normally distributed with standard deviation 21.25, then what is the probability that a randomly selected time interval between eruptions is longer than 95 minuntes.
The heights, in feet, of the five tallest buildings in four large cities are compared. What is the critical value if the level of significance is 0.10?
Use @RISK to simulate 100 weeks of each strategy 1000 times. Which strategy appears to be best in terms of the maximum growth rate?
Suppose normality, determine a 90% confidence interval for population variance.
question 1 a persons blood glucose level and diabetes are closely related. let x be a random variable measured in
a study shows that approximately 15 of all businessmen who wear ties wear them to tight. at a board meeting of 25 all
Write a sentence showing how the outcome of the hypothesis test and the measure of effect size would appear in a research report.
The following table presents data on political party affiliation and class level for sample of students in certain university: If the student is selected at random from sample, determine the probability that student is Republican.
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