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On the day that this poll was writen , AOL conducted an Internet poll and asked users to respond to this question: Where do you live" If a user chose to respond, he or she could choose "urban area" or "rural area". Results included 51,318 responses of "urban" and 37,888 responses of "rural". a) Use the given poll results with a 0.01 sinificance level to test the claim that most people live in urban areas b) Which of the following best describes the sample: Convience, simple random sample, random sample, voluntary response sample, stratified sample, cluster sample c) Considering the sample method used, does the hypothesis test from Part (a) appear to be valid d) Given that the size of the sample is extremely large, can this sample size compensate for a poor method of sampling e) What valid conclusion can be made from the sample results, can we conclude anything about the whole population.
Indicate at which point flat-of-the-curve medicine is experienced in the following example (imagine that antibiotics have been prescribed for a given population of 1,000 elderly persons).
Consider a binomial distribution with 15 identical trials, and a probability of success of 0.5. Find the probability that x = 2 using the binomial tables
What is an example of a normal distribution? please articulate what the example is (post the graph, picture of the graph, etc); discuss what the normal distribution means for this example, and how the graph is being used to articulate the problem.
A raffle offers a first prize of $1000 2 second prizes of $300 and 20 third prizes of $10 each. If 15000 tickets are sold at 75 cents each, find the expected winnings (IN CENTS) for a person buying one ticket?
What are some differences between discrete and continuous data? Is the measurement of money continuous or discrete? Explain. Can discrete data be analyzed using a normal distribution? Why or why not?
In 1998, as the advertising campaign, Nabisco Company announceda "1000 Chips Challenge," claiming. Develop the 95% confidence interval for average number of chipsin bags of Chips Ahoy cookies.
Sample data in a goodness-of-fit test are compared with __________. A. a predetermined or historical standard for the variable being studied
Suppose that this is a simple random sample of adult residents of Maine.
Determine the probability that adult owns stock and has some college education? Determine the probability that adult owns stock or has some college education?
A normal distribution was used as the prior for the mean, and it was found that posterior mean was 15 and the posterior standard deviation was 0.1 what were the mean and standard deviation of the prior.
The length of time to do a complete full service oil change at Speedy-Lube is normally distributed with a mean of 15.8 minutes and a standard deviation of 2.2 minutes
What are the expexted value and standard deviation, respectively, of the number of successful first serves? What is the probability she makes 90 or more successful first serves?
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