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Cross- tabulation:
Test the association between esophageal cancer and alcohol consumption (using the original alcohol consumption variable) write down the hypothesis, the test used, the p-value and the interpretation. Is there a need for the Fishers exact test? Why? Test the association between esophageal cancer and alcohol consumption (using the dichotomized alcohol consumption variable) write down the hypothesis the test used the p-value and the interpretation then hand calculates a 95% CL for the odds ratio estimate on this last test.
If p denotes the p -value of the corresponding hypothesis test, which of the following is true?
Create a set of n observations from the binomial distribution with 1 trial and the event probability of 0.007, where n is your answer.
From her district, consisting of several hundred stores, she selects a random sample of 30 stores. For each store she gathered the following information.
The data in the scatterplot below are an individual's weight and the time it takes (in seconds) on a treadmill to raise his or her pulse rate to 140 beats per minute. The o's correspond to females and the +'s to males.
Perform a chi-square test on the following data:
Then use ogive to estimate median and first and third quartiles. Also utilize it to reply following question: What percent of 60 mutual fund loads are less than 75.
An automobile insurance company estimates the following loss probabilities for the next year on a $25,000 sports car:
Two letters are chosen at random without replacement from word statistical. Determine the probability that both letters are s?
Suppose that the results of the sample lead to rejection of the null hypothesis. Classify that conclusion as a:
The number of passengers on the Carnival Sensation during one-week cruises in the Caribbean follows the normal distribution.
A human factors psychologist studied three computer keyboard designs.
Assume that demand for the upcoming weekend is normally distributed with a standard deviation of 30.
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