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Question: Refer to Exercise. What is the most conservative estimate of the sample size that would limit the margin of error to within .03 of the population proportion for a 99% confidence interval?
Exercise: A consumer agency wants to estimate the proportion of all drivers who wear seat belts while driving. Assume that a preliminary study has shown that 76% of drivers wear seat belts while driving. How large should the sample size be so that the 99% confidence interval for the population proportion has a margin of error of .03?
A local church parish wants to raise money to add to their campus. In a sample from a previous fund raising campaign, the parish found that of the 137 people
translate the following statements into equivilant formal expressionsa. some things are not owned by anyone.b. some
Suppose that 100 people are given lipid lowering drugs and that the drug appears to be effective in about 20 of them. Effective is defined as lowering their cholesterol values by 10 points in one month.
In a survey on corporate ethics, a poll split a sample at random, asking 538 faculty and corporate re- cruiters the question: "Generally speaking, do you believe that MBAs are more or less aware of ethical issues in business today than five years ..
an inspector correctly identifies defective products 90 of the time. for the next 10 products the probability that he
If you suppose returns follow normal distribution, which investment would give better chance of getting at least a $40MIL return and describe why.
Job Interviews: Based on information from MRINetwork, some job applicants are required to have several interviews before a decision is made. The number of required interviews and the corresponding probabilities are: 1 (0.09); 2 (0-31); (0.37); 4 (..
A number of minor automobile accidents occur at various high-risk intersections in Teton County despite traffic lights. The Traffic Department claims that a modification in the type of light will reduce these accidents.
What is the population Regression function? ("GNP" is dependent, and "Invest," "CPI" and "Interest" are independent) Is this regression function significant overall (state the null and alternative hypotheses and explain how you reached that conclus..
a quarter that is tossed 60 timeswhat is the probability that it will come up heads 20 or more times? estimate the
suppose that the probability that a duck hunter will successfully hit a duck is 0.40 on any given shot. suppose also
Determine the highest number of miles (to nearest whole number) that motorist could drive in month and still qualify for discount?
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