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Paracetamol (acetaminophen) is the most commonly used analgesic in young children. Some evidence suggests that ingestion of paracetamol in early life may cause asthma in some children. In the study, 495 children with a family history of allergic disease have been exposed to paracetamol in the first two years of life. It was found that 148 of these children have developed asthma between the age of 6 and 7. (a) Give a 95% confidence interval for the proportion p of children with asthma, in the general population of children who were exposed to parac-etamol in early life and have a family history of allergic disease. (b) It is estimated that among the children with a family history of allergic disease, 25% have asthma. Is there enough evidence that the proportion p is higher than 25%? Use a test of hypothesis at level (alpha) = 0.01.
Explain the Continuity Correction Factor and provide a good example and estimate the population proportion
What is the mean of this uniform distribution? What is the standard deviation?
Explain the differences between longitudinal and cross sectional business research studies. Which two types of probability sampling are best suited for business research and statistical data analysis, and why?
Find the margin of error for a 89% confidence interval for the true mean cost of textbooks of U of M students in one semester.
At the .05 significance level, can we conclude that the guideline is still reasonable?
Suppose that, in a sample of 200, we observe 140 successes. Is this sufficient evidence at the 1% significance level to indicate the the population proportion of successes is greater than 65%
Calculate the population mean and population standard deviation.
Replacement times for CD players are normally distributed with mean of 7.1 years and a standard deviation of 1.4 years (based on data from "Getting Things Fixed," Consumer Reports). Find the probability that a randomly selected CD player will have..
Find out if a difference between two response sets is significant. I asked 98 boys what modalities they thought were attractive to girls. 35 said athletes; 25 said tough guys. The rest endorsed other modalities at lesser rates.
The probability density of the net weight in ounces of a packaged compound is f(x)=2.0 for 19.75
Using the six-step critical value approach, at the 0.05 level of significance, is there evidence that the population mean delivery time has been reduced below the previous population mean value of 25 minutes?
Determine the probability that no more than 10 firms are perfectly competitive?
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