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On January 11, 2005, the Gallup Organization released the results of a poll investigating how many Americans have private health insurance. The results showed that among Americans making less than $ 30,000 per year, 33% had private insurance, 50% were covered by Medicare/ Medicaid, and 17% had no health insurance, while among Americans making $ 75,000 or more per year, 87% had private insurance, 9% were covered by Medicare/ Medicaid, and 4% had no health insurance. 2 Use bar and pie charts to compare health coverage of the two income groups.
Determine the probability, using binomial distribution, of obtaining 4 or more nonconforming units when sampling 30 computers from batch known to be 10% nonconforming.
Using α = .05 test for significance differences among the population mean wasted time for theses three urban areas. What is the p-value? What is your conclusion?
It is suspected that the mean turnover has changed and is not 6.0. Use the .05 significance level. Give the formula for the test statistic.
Develop 3 regression models to forecast selling price based upon each of other factors individually. Which of these is best?
A report states that 46% of home owners have a vegetable garden. How large a sampl.e is needed to estimate the true proportion of home owners who have vegetable gardens to within 4 percentage points with 95% confidence?
Graphical method to solveout the linear programming problem. Describe where the following TEO constraints intersect.
30% of the college of business students major in finance. A random sample of 20 students is selected. What is the probability that no more than 3 students of the selected students are majoring in finance?
The entire batch will be rejected if at least one of those tested is defective. What is the probability that the entire batch will be rejected? Assume independence.
The difference between a random variable and a probability distribution is: A. A random variable does not include the probability of an event. B. A random variable can only assume whole numbers
If a six appears for the third time, the turn of the player ends without moving the token. Determine the sample space of one such throw and determine the probability for each event.
Do the data you obtained provide enough evidence to reject the claim? Use a 1% level of significance.
The annual salaries for Americans are normally distributed with a standard deviation equal to $7,500. Find the following:What percentage of Americans earn below $20,000?
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