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The best places in the United States to be a job seeker are state capitals and university towns, which are claimed to have jobless rates below the national average of 4.2%.
A sample of 50 towns and state capitals showed average jobless rate of 1.4% with a standard deviation of 0.8%. State the null and alternative hypotheses and carry out the test at the 1% level of significance.
The State Transportation Department is interested in estimating the proportion of vehicle owners that are operating vehicles without the required liability insurance.
let a b and c be independent random variables uniformly distributed over 07 08 and 03 respectively. what is the
In the graphical method, how do you know when a problem is infeasible, unbounded, or when it has multiple optimal solutions? What are the essential ingredients of an LP model? Why is it helpful to understand the characteristics of LP models?
gymnorhina tibicen mist netted 25 adults from an isolated rural area and 36 from an urban picnic area. she measured the
Represent these data in a frequency table a relative frequency line graph.
Find the probability that the mean GMAT score of mean of the sample pf 25 examinees is less than 480? Find the probability that exactly 10 out of 25 selected examinees achieved a score greater than 420.
Assuming that the sample was not skewed (i.e. it was normally distributed), about how many exam scores would you expect to fall between the range of 75 to 85?
on nov 1 2012 there was a florida poll. the poll was of 549 likely florida voters. 47 said they were going to vote
A newspaper ad for a manager trainee position contained the statement "Our manager trainees have a first-year earnings average of $20,000 to $24,000." Do you think that the ad is describing a confidence interval? Explain your answer.
Choose one time-series describing Airlines and make a line chart. Describe the trend (if any) and discuss possible causes. Fit both a linear and an exponential trend to the data.
It is better to use the median rather than the mean for a distribution when:
assume that the data has a normal distribution. also assume that the standard deviation of the population sigma is
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