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A random sample survey of 2,000 motorists found that 827 or 41.4% of them had been to their service garage for repairs and for servicing during the previous three months. What is the standard error of this proportion? (b) Now calculate the standard error of the proportion for samples of 1,000, 4,000 and 8,000 in the above example. What is the relationship between sample size and standard error of the mean and what are the implications of this?
deduce that there exists a constant C such that for all
a state makes licenses plates with four letters followed by four digits how many licences plates can you have with no
The types kinds of statistical information collected in your professional setting. Provide examples to illustrate the information/data.
Would it be reasonable to conclude that the population distribution is Poisson with a mean of 2.0?
which of the following is a valid objective function for a linear programming problem?none of the answers are validmin
What is the smallest number of consumers that Timex can survey to guarantee a margin of error of .05 or less at a 99% confidence level and calculate the intervals correctly
a study is run comparing hdl cholesterol levels between men who exercise regularly and those who do not. the data are
Give an example of when the F-statistic would be a useful value in data analysis. Provide details of what you would measure and how the F-statistic would be used.
find The probability that it is at least two hours until the first failure occurs, The probability that it is no more than six hours until the first failure occurs and The average time to the first failure.
A crate is examined and found to contain 115 defective noodles. What is the approximate probability of finding at least this many defective noodles if the machine is properly adjusted?
a 95 confidence interval for a population mean u is given as 18.958 21.015. this confidence interval is based on a
the 70-year long-term record for weather shows that for new york state the annual precipitation has a mean of 39.81
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