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In a preliminary study, the U.S. Veterans Affairs Department found that 30.9% of the 81 soldiers who were near an accidental nerve gas release just after the 1991 Persian Gulf War had muscle and bone ailments, compared to a rate of 23.5% for the 52,000 Gulf veterans who were not near that area.
Use an appropriate one-tail test and the 0.10 level of significance in examining the difference between these two rates. Determine and interpret the p-value for the test.
A National Health Service used extensive surveys of medical professionals to establish that, in 2005-2010, the mean serum cholesterol level of males aged 20-74 was 211. The standard deviation was 90.
if the correlation between the two independent variables of a regression analysis is 0.11 and each independent variable
What are the genotypes of everyone mentioned in this problem? If this couple has another child, what is the probability this child will taste PTC
What is the expected value of the probability distribution? What is the variance of the probability distribution?
a clinical trial is conducted comparing a new pain reliever for arthritis to a placebo. participants are randomly
How many different ways can he bribe academics
The cost of 5 gallons of ice cream has a variance 36 with a mean of 31 dollars during the summer. What is the probability that the sample mean would be less than 29.8 dollars if a sample of 39 5 gallon pails is randomly selected?
six hundred draws will be made at random with replacement from the box 0 0 1 . the number of 1s among the draws will be
What is the probability that none of three randomly chosen persons areallergic to this drug . what is the probability that at least one person is allergic to this drug.
Use a 95% confidence interval to estimate the proportion of sports utility vehicles in California. How can you estimate the proportion of sports utility vehicles in California with a higher degree of accuracy?
Determine the probability distribution associated with these data.
The instructor plans to draw a histogram of the 1,100 sample proportions. What will be the approximate mean for the 1,100 sample proportions?
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