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Question: Are big hospitals bad for you? A study shows that there is a positive correlation between the size of a hospital (measured by its number of beds x) and the median number of days y that patients remain in the hospital. Does this mean that you can shorten a hospital stay by choosing a small hospital? Why?
What is the probability that exactly 23 meals will have high sodium content?- What is the probability that at least 25 will have high sodium content?
The dean of students believes that teh costs are greater this semester. What is the test value for this hypothesis?
What is the range of maintenance costs? What is the standard deviation? About 95 percent of the maintenance costs are between what two values?
A person claims to be able to predict the outcome of flipping a coin. This person is correct 16/25 times. Compute the 95% confidence interval on the proportion of times this person can predict coin flips correctly.
Show how to generalize apply-generic to handle coercion in the general case of multiple arguments. One strategy is to attempt to coerce all the arguments to the type of the first argument, then to the type of the second argument, and so on.
drawing a black card club or spade from a standard deck of
a new method of treatment is hypothesized to reduce the days patients are hospitalized after surgery. for a sample of
When using the six step procedure for testing hypothesis, what type of conclusion is identified when you reach the "interpret the test/result" step? Is this the method that can be used to present the results in which the test statistic disagrees ..
Use Table D and your picture to illustrate the values of the test statistic that would lead to rejection of the null hypothesis at the 5% level for a two-sided alternative.
from their 50 data points washington dc not in the study the researchers calculated a correlation of 0.988. based on
Write down the value of the gradient of the regression line and explain what it means in this case. Is the constant or intercept value significant in this case? How do you know this?
In a study of nursing home patients, the following data were obtained for each patient; - Classify each variable by whether it is nominal, ordinal, interval, or ratio according to Stevens' classification.
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