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In a manufacturing plant employing a double inspection procedure, the first inspector is expected to miss an average of 25 defective items per day with a standard deviation of 3 items. If the first inspector has missed on average of 29 defectives per day based upon the last 30 workings days, is he working up to company standards? (Use = .01)
three cards are drawn without replacement from a standard deck of fifty-two cards. find the probability of these
List the elements of the sample space S using the letters G and D for good and defective respectively. What is the mean number of defective hard drives that the small business receives if all their shipments come in sets of five that contain the sa..
questiona if a person is randomly selected find the probability that his or her birthday is october 18 which is
According to an article, 19% of the entire US population have high-speed access to the Internet. Random samples of size 200 are selected from the US population.
Assume that the standard deviation of college student IQ's is 10. A random sample of 100 students from a college showed an average IQ of 110. Compute a 95% confidence interval for the mean IQ of students attending this college.
suppose we want to determine the binomial probabilityp of getting 3 heads in 13 flips of a 2-sided coin. what values of
Determine how large a sample would be necessary to estimate the population proportion with a margin of error of .05 at 95% confidence.
the manager of a youth-oriented clothing store at the local mall has determined that 27 of the males who enter the
Does a regression model imply causation? Why or why not? Provide an example which provides and independent and dependent variable from your place of work.
Martin Motors has in stock three cars of the same make and model. The president would like to compare the gas consumption of the three cars (labeled car A, car B, and car C) using four different types of gasoline. For each trial, a gallon of gasoline..
a company studying the productivity of their employees on a new information system was interested in determining if the
What are some real life examples of the use of Chi-Square tests using contingency tables? Why is a test, which is testing significant differences among means called Analysis of Variance?
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