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Identify the type of sampling used: random, systematic, convenience, stratified or cluster. To estimate the percentage of defects in a recent manufacturing batch, a quality control manager at daimler-chrysler selects every 13th van that comes off the assembly line starting with the tenth until she obtains a sample of 70 vans. which type of sampling method is used?
The variable recorded for each subject was the number of additional yards (possibly negative) that the subject could drive the ball by the end of the season. In the two-way ANOVA the DFM
Precisely (i.e., using specific numbers) what does central limit theorem tell us about sampling distribution of sample means for samples of this size from this population?
A small town has a population of 20,000 people. Among these 1,000 regularly visit a popular local bar. A sample of 100 people who visit the bar is surveyed for their annual expenditures in the bar.
Find the probability that a standard normal random variable will assume a value between: Find a z such that 70% of the area is above that value.
which of the following would produce a standard error of 2 points? explain your response.n 25 scores from a population
f no more than 5% of the containers are to weigh less than 15.8 oz, what must the standard deviation of the weights equal?
A random sample of 58 fish is taken from the tank. Let x be the mean sample length of these fish. What is the probability that x is within 0.5 inch of the claimed population mean? (Round your answer to four decimal places.)
At the .10 significance level you will test to determine if there has been an increase in selling time. Assuming we are using a t test what will be the critical value"?
State the values of the coefficient of correlation and coefficient of determination correct to three decimal places
What is the value of z score required for a 70% confidence interval?
Normal distribution with a mean of 8.1 minutes and a standard deviation of 1.9 minutes. For a randomly received emergency call, find the following probabilities. The response time is between 5 and 10 minutes
Suppose the population standard deviation is 0.3 minutes and the sample mean is 9.975. Find the sample mean and compute. A 90-percent confidence interval for the true mean delivery time, is?
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