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Question: Respiratory breathing capacity of individuals in houses with low levels of nitrogen dioxide was compared to the capacity of individuals in houses with high levels of nitrogen dioxide. From a sample of 200 houses of each type, breathing capacity was measured on 600 individuals from houses with low nitrogen dioxide and on 800 individuals from houses with high nitrogen dioxide.
(a) What problem do you foresee in applying t-tools to these data?
(b) Would comparing the average household breathing capacities avoid the problem?
Discuss an example from every day life, your professional experience, personal life or sports where two variables are positively correlated and why; discuss a second example where two variables are negatively correlated and why.
you wish to test the claim that u gt 11 at a level of significance of ? 0.05 and are given sample statistics n 50
Blood donors. A person with type O-positive blood can receive blood only from other type O donors. About 44% of the U.S. population has type O blood.
Binomial distribution to find out the mean also standard deviation. Variance and standard deviation of a lot of 300 calculators.
For each definition, identify the correct term for the type of bias being defined. Possible answers are selection bias, non-participation bias.
Describe the use of normal probability plot to evaluate whether a set of data is normally distributed?
suppose that a health expert has claimed that 17 of college students smoke cigarettes. to investigate this claim
Much has been said about airline deregulation and the effects it has had on the airline industry and its performance.
Brooke can expect a different grade in each of thecourses, depending on who teaches it next quarter. Determine the best course to take next quarter, using the following criteria Maximax.
An ANOVA was run and the results are shown below. At the .01 significance level, is there a difference in the weight loss between the three plans? What is the p-value? What can you do to determine exactly where the difference is?
02. The Complement rule states that the probability of an event not occurring is
a company that manufactures video cameras produces a basicmodel and a deluxe model. over the past years 40 of
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