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The standard screening test for Down's syndrome is based on a combination of maternal age and the level of serum alpha fetoprotein. Using the test 80% of Down's syndrome cases can be identified while 5% of normals are detected as positives.
What is the sensitivity and specificity of the test? Suppose that 1 out of 500 infants are born with Down's syndrome.
Sample size of only 20. Find out a 95% confidence level for population Cp.
In a test of the MicroSort method of gender selection, 51 babies are born to couples trying to have baby boys, and 39 of those babies are boys (based on data from the Genetics & IVF Institute).
For a given confidence interval, what is the interpretation of a 96% confidence level?
If the voice identifications were made by random guess, find the probability that all 9 victims would select the same person?
A random sample of eight cars from each manufacturer is selected, and eight drivers are selected to drive each automobile for a specified distance.
The amount of time a bank teller spends with each customer has a population mean = 3.1 minutes and population standard deviation = 0.4 minute.
Lead-time demand is 600 pounds. The standard deviation of lead time demand is 52 pounds. Supposing the lead time demand is normally distributed and that an acceptable risk of stocking out is 4%:
A nationwide test taken by high school sophomores and juniors has three sections, each scored on a scale of 20 to 80. In a recent year, the national mean score for the writing section was 47.2 , with a standard deviation of 10.2.
Confirm that these statements are accurate by finding the geometric mean rate of increase.
A simple random sample of 6 recent graduates revealed the following information about their weekly incomes. What is the expected value of the average weekly income of all the recent graduates?
Give an example of a situation in which multiple linear regression, discriminate analysis, canonical correlation, and multivariate analysis of variance might be used.
Computing the mean and standard errors of sampling distribution - Using the central limit theorem, find the means and standard errors of sampling distributions
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