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2,542 runners who took part in a 10km race had an average time of 1 hr and 11 minutes. The standard deviation was 12 minutes. Using Chebysheff's theorem, determine at least how many runners had a running time between 53 minutes and 89 minutes?
One of them claims that using a coin to make the choice is not fair because the probability that it will land on a head or a tail is not exactly 0.50. How can the coin still be used for making the choice?
Identify and interpret the p-value for the test, then construct and interpret the 90% confidence interval for the difference between the population proportions.
the pitney pipe company is one of several domestic manufactures of pvc pipe. the quality control department sampled 600
Calculate the 90% confidence interval about μ if sample size, n, is 55. How does increasing sample size affect margin of error, E?
Thales Alenia Space is preparing an advertising campaign in which they claim to have had 20 successful launches in a row. What is the probability that the first failure due to a solar-panel problem will occur after the 20th launch?
If 5 light bulbs are randomly selected from the bin with replacement, find the probability that all the bulbs selected are good ones.
What problems do you see with the graph?- Consider the percentages for the named modalities. Do you see anything odd about them?
The normal distribution is a family of distributions that is often used to model operational processes. Based on your readings for this module, give one example, different from those supplied in the overview, of how the normal distribution can be ..
A machine to detect improper welds in a fabricating shop detects 80 percent of all improper welds, but it also incorrectly indicates an improper
A consumer is contemplating the purchase of a new compact disc player. A consumer magazine reports data on the major brands. Brand A has lifetime (TA) which is exponentially distributed with m=.02; and Brand B has lifetime
If each person just buys one ticket, what is the probability that none of them will have to wait for change? Use computer simulation.
Eighty-eight shoppers were interviewed at random, and 59 said that they prefer to shop alone. What is the value of q-hat?
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