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A study looked at the relationship between coronary heart disease (CHD) and coffee consumption in a group of 40-55 year old men. Among the 790 heavy coffee drinkers (at least 100 cups per month), there were 38 CHD cases. Among the 928 moderate and non-drinkers (less than 100 cups per month), there were 39 CHD cases.
(a) Test the hypothesis that the rate of CHD is higher for heavy coffee drinkers at the 5% level of significance.
(b) Obtain the p-value for the value of the test statistic in (b).
(c) What would the p-value be if the hypothesis to be tested was simply that the rate of CHD differs between the two groups?
(d) Obtain a 95% confidence interval for the difference in the population proportions of CHD cases between the two categories of coffee drinkers.
V ariance A measure of dispersion the variance represents the average distance from any given observation in a series to the mean of that series in the units squared.
Short-Term Credit Decision In no more than one typed page, provide a statement of your decision to lend or not lend to this company based on your interpretation of the company
Bonded warehouse is a storage area under Customs authority that is imported dutiable goods on which duty is unpaid and these are stored. Once the duty & other charges are paid the
Just interested how indepth are the answers
a survey of grocery revealed 40 percent had a pharmacy, 50 percent had a floral shop, and70 percent had a deli. suppose 10 percent of the stores have all three departments, 30 perc
Show that for a single-output technology, Y is convex if and only if the production function f (z) is concave.
determine the required value of the missing probality to make the distribution a discrete probability distribution
examples
Hi I have done my report based on SPSS data but need a help for deeper analyzing and correcting this what I have already done. Would you be able to help me and if so how much would
Ask Suppose that the expected number of phone calls that are handel by a switchboard in each second is 5.35. Assume that the distribution of the number of phone calls per second fo
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