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Flaws in a carpet tend to occur randomly and independently at a rate of one every 200 square metres. What is the probability that a carpet that is 8 metres by 10 metres contains no flaws? Use an appropriate Excel function and write down the formula shown in the formula bar.
A number of years ago, there was a popular television game show called Let's Make a Deal. The host Monty Hall, would randomly select contestants from the audience and, as the title suggests
Standard deviation of 14 inches. What is the probability that the mean annual snowfall will be between 70 and 80 inches.
Estimate the number of workers in the sample who are union members by giving the mean of the relevant distribution (that is, the expectation of the relevant random variable). Do not round your response.
There were 3 defectives in the first batch and 5 in the second. Find a 95% confidence interval using the plus four method for the difference in the proportion of defectives.
Categorize the events as dependent or independent. Events A and B where P (A) = 0.7, P (B) = 0.8, and P (A and B) = 0.56.
Explain why it is not appropriate to perform a formal inference procedure and yet it is still reasonable to conclude that the incidence rate is higher for gulf war veterans than for those who did not serve in the gulf war.
Of those female students, 85% of them will graduate, whereas 90% of males will successfully complete the same programme. If a new TESL student is chosen at random, what is the probability that: They graduate and they are female?
Standard deviation was increased to 40, determine the overall effect on their society? Would this change be a good thing?
A teacher claims that the variance on a calculus test is 68. A sample of 28 students had a standard deviation of 5.8. Test the teacher's claim at the 0.05 level of significance.
Explain how much should the airport authority be willing to pay for perfect information about the success of a brand new airport.
30 said that they planned to work in a rural community. Find a 95% confidence interval for the true proportion of all medical students who plan to work in a rural community.
Find a 95% confidence interval for the true proportion of voters who approve of the way the government is being run.
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